Jon,
There is no need to apologize. I have been nothing but amazed at the speed and effort you put into this project. That being said, that is why you have beta tests. Items are being added back to the main windows taskbar again when moved from secondary, so that seems to be resolved. I would like to also note that the taskbars seem to be a little bit snappier now. Did you change the updated speed or something? I for one say keep up the good work.

Hey, everyone makes mistakes. Even giant commercial software companies have to put software into escrow, to be absolutely certain that a mistake didn't get introduced at the last minute..

The new build looks good.

Jon, thanks for the update. I'll check out how it handles Excel, but for now, the DF taskbar still gets stuck behind apps. Main taskbar was set to auto-hide. Here's my log:
--- Machine ------------
Operating System: Microsoft Windows NT 5.1.2600 Service Pack 3
Operating System Version: 5.1.2600.196608
Detected Version: WindowsXP / 2003
CPU: x86
Date/Time (UTC): 05/29/2009 15:43:06
Date/Time (Local): 05/29/2009 08:43:06
.NET Framework: 2.0.50727.3082
CurrentCulture: English (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: False
Monitor #1 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\Connection.jpg
Monitor #2 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\cosmogony1280.jpg
Monitor #3 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\dispersion1920.jpg

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.0.4 (Beta)
Build Date: May 28, 2009 21:14
Pro: True
Pro License: 101-QVKN-57C6-GYZK (truncated)
Command Line: "C:\Program Files\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files\DisplayFusion
Performance Mode: False
Prevent System Hooks: False

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 4, 1, 0
File Version: 1, 4, 1, 0
Size: 47,792 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 4, 1, 0
File Version: 1, 4, 1, 0
Size: 60,592 bytes

--- Monitor 1------------
Name: \\.\DISPLAY1
Primary: True
Bounds: {X=0,Y=0,Width=1280,Height=1024}
WorkArea: {X=0,Y=0,Width=1280,Height=1024}

--- Monitor 2------------
Name: \\.\DISPLAY2
Primary: False
Bounds: {X=2192,Y=-1024,Width=1280,Height=1024}
WorkArea: {X=2192,Y=-1024,Width=1280,Height=1022}

--- Monitor 3------------
Name: \\.\DISPLAY3
Primary: False
Bounds: {X=1280,Y=0,Width=1440,Height=900}
WorkArea: {X=1280,Y=0,Width=1440,Height=898}

--- Screens ------------
Count: 3
Point Min X: 0
Point Min Y: -1024
Point Max X: 3472
Point Max Y: 1024
Total Width: 3472
Total Height: 2048
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Location: 0 x 0
Size: 1280 x 1024
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 1
Device: \\.\DISPLAY2
Location: 2192 x -1024
Size: 1280 x 1024
MoveH: 0
MoveV: 0

--- Screen 3------------
ScreenID: 2
Device: \\.\DISPLAY3
Location: 1280 x 0
Size: 1440 x 900
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 4
ID:3 ~ Name:TaskbarManager ~ Age:00:06:05.8593750 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:TaskbarManager_42616a97-70e2-4ed3-9c6e-7ffa5987a180
ID:4 ~ Name:HookManager ~ Age:00:06:05.8593750 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_5d060be3-36eb-43cc-b1ae-cc7f8815d753
ID:134 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.3437500 ~ Alive:False ~ BG ~ State:Stopped ~ Thread Name:Hook:WM_LBUTTONDOWN_557de0bb-d614-4d55-b5df-6c07e16b71fb
ID:133 ~ Name:TaskbarEnum ~ Age:00:00:00.2343750 ~ Alive:False ~ BG ~ State:Stopped ~ Thread Name:TaskbarEnum_a3d72cc2-bf67-445e-a40e-ce3b51edeaaf

--- Taskbars ------------
Enabled: True
Auto-hide: True
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: False
Opacity: 100
Window Options: ShowRelevant
Button Width Max: 160px
Full Screen: 00c40398 ~ {X=2192,Y=-1024,Width=1280,Height=1024}
Full Screen Games: 00000000 ~ {X=0,Y=0,Width=0,Height=0}
Count: 2

--- Taskbar 1------------
Location: {X=2192,Y=-2,Width=1280,Height=2}
TopMost: False
Buttons (1):
"smipacs01 - Remote Desktop" (00781344:00781344)

--- Taskbar 2------------
Location: {X=1280,Y=898,Width=1440,Height=2}
TopMost: True
Buttons (1):
"iGoogle - Mozilla Firefox" (003010e6:003010e6)

--- Deleted Items (1)------------
003010e6

--- Windows Taskbar Buttons (5)------------
"iGoogle - Mozilla Firefox" (003010e6:003010e6:003010e6 ~ None ~ GCL_HIconSM ~ 1276x-4)
"smipacs01 - Remote Desktop" (00781344:00781344:00781344 ~ None ~ GCL_HIconSM ~ 2192x-1024)
"Inbox - Microsoft Outlook non-commercial use" (00070fe8:00070fe8:00070fe8 ~ None ~ GCL_HIconSM ~ -4x-4)
"RingCentral Call Controller" (00010e96:00010e96:00010e96 ~ None ~ Icon_Small2 ~ 991x573)
"RISLinQ" (00200fc2:00200fc2:00200fc2 ~ None ~ Icon_Small2 ~ 0x0)

Possible regression, I think this bug is back.

Yarr, bloody bugs, crush'em crush'em I says! Blast!

We know, Jon - and we're not being fanboys when we say this. We all know that you really do put a lot of time and (well-spent) effort into this project. I for one really really appreciate it.

I tested out a few things and I've come to some conclusions:

Under "Performance Mode" I can't reproduce that bug anymore however the whole system feels sluggish and it further increases the general lagginess.
Enabling "Preventing System Hooks" DF seems to load up faster and, despite still maintaining some high CPU usage at times, doesn't seem to lag.

On that note, can you tell me what it is that enabling "Preventing System Hooks" breaks?

Uhhh, unless you released without telling anyone, DF likes to update to 3.0.5.... Non beta. Did you release it?

Lol twittered.

I usually change between window and full screen depending on my task. Well, I tested that theory today with the 3.0.5 release and NOT running RDP. No go. DF taskbar still hiding...

--- Machine ------------
Operating System: Microsoft Windows NT 5.1.2600 Service Pack 3
Operating System Version: 5.1.2600.196608
Detected Version: WindowsXP / 2003
CPU: x86
Date/Time (UTC): 06/01/2009 19:17:04
Date/Time (Local): 06/01/2009 12:17:04
.NET Framework: 2.0.50727.3082
CurrentCulture: English (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: False
Monitor #1 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\Connection.jpg
Monitor #2 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\cosmogony1280.jpg
Monitor #3 Image: C:\Documents and Settings\scotta.SOUNDMEDIMAGING\My Documents\My Pictures\Wallpaper\dispersion1920.jpg

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.0.5
Build Date: May 30, 2009 12:09
Pro: True
Pro License: 101-QVKN-57C6-GYZK (truncated)
Command Line: "C:\Program Files\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files\DisplayFusion
Performance Mode: False
Prevent System Hooks: False

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 4, 1, 0
File Version: 1, 4, 1, 0
Size: 47,792 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 4, 1, 0
File Version: 1, 4, 1, 0
Size: 60,592 bytes

--- Monitor 1------------
Name: \\.\DISPLAY1
Primary: True
Bounds: {X=0,Y=0,Width=1280,Height=1024}
WorkArea: {X=0,Y=0,Width=1280,Height=1024}

--- Monitor 3------------
Name: \\.\DISPLAY3
Primary: False
Bounds: {X=1280,Y=0,Width=1440,Height=900}
WorkArea: {X=1280,Y=0,Width=1440,Height=898}

--- Screens ------------
Count: 2
Point Min X: 0
Point Min Y: 0
Point Max X: 2720
Point Max Y: 1024
Total Width: 2720
Total Height: 1024
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1280,Height=1024}
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 2
Device: \\.\DISPLAY3
Bounds: {X=1280,Y=0,Width=1440,Height=900}
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 3
ID:3 ~ Name:TaskbarManager ~ Age:01:41:46.5616041 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:TaskbarManager_34b7c63e-e9c7-4dc8-8c58-bcb1722cecc6
ID:4 ~ Name:HookManager ~ Age:01:41:46.5616041 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_fa5926a4-36f4-46db-9bc4-3568624ae5b3
ID:107 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.2500000 ~ Alive:False ~ BG ~ State:Stopped ~ Thread Name:Hook:WM_LBUTTONDOWN_0cf76094-c013-490b-b3f4-8489fe0e9352

--- Taskbars ------------
Enabled: True
Auto-hide: True
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: False
Opacity: 100
Window Options: ShowRelevant
Button Width Max: 160px
Full Screen: 00000000 ~ {X=0,Y=0,Width=0,Height=0} ~ None
Full Screen Games: 00000000 ~ {X=0,Y=0,Width=0,Height=0} ~ None
Count: 1

--- Taskbar 1------------
Location: {X=1280,Y=898,Width=1440,Height=2}
TopMost: True
Buttons (2):
"eFilm 3.1.0 - [SIMPSON HOMER, 2009 Jun 01, 10:15:04 / ]" (00071028:0007102
"iGoogle - Mozilla Firefox" (00451158:0045115

--- Deleted Items (2)------------
00071028
00451158

--- Windows Taskbar Buttons (4)------------
"RISLinQ" (003514d4:003514d4:003514d4 ~ None ~ Icon_Small2 ~ {X=-4,Y=-4,Width=1288,Height=1032})
"Inbox - Microsoft Outlook non-commercial use" (004102a8:004102a8:004102a8 ~ None ~ GCL_HIconSM ~ {X=-4,Y=-4,Width=1288,Height=1032})
"eFilm 3.1.0 - [SIMPSON HOMER, 2009 Jun 01, 10:15:04 / ]" (00071028:00071028:00071028 ~ None ~ GCL_HIconSM ~ {X=1276,Y=-4,Width=1448,Height=906})
"iGoogle - Mozilla Firefox" (00451158:00451158:00451158 ~ None ~ GCL_HIconSM ~ {X=1276,Y=-4,Width=1448,Height=906})