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VB.Net 2008 IDE hanging - MSVB7.dll eating 100% CPU when editing code

Edit 1: Uninstalled & Reinstalled
Edit 2: Same problem. Seriously? Yes.

I am having a problem with msvb7.dll eating 50%+ cpu on my dual core system. This usually lasts 10-30 seconds or so, during which time the IDE is non-responsive.

This occurs when I do pretty much anything in the text editor, and can be replicated by simply adding blank lines to a function, and then deleting them. Or pasting some code. Or... lotsa stuff.

SP1 installed
I had DevExpress' refactor/coderush, components, and codeit.right installed, but have removed all 3 of them.

(I had installed the latest version of Refactor Pro! (9.3.4), perhaps the day before)

I have tried a VS.NET Repair.
There is a kb that referenced some cpu destroying with vb, but it was included in SP1

Also:

The solution consists of ~30 VB projects and 2 C# projects
8 other developers aren't having any issues with this (or at least not the SAME issues, we all have em)
Clean get from TFS was done
Project builds properly, can can even debug.
This doesn't seem to happen on really small solutions, but perhaps it does and it just goes away super quick.

Any clues at all as to what might be causing this, or how to fix it? I REALLY don't want to lose another day uninstalling and reinstalling and patching and so on =) If that even fixes it.

Edit looking at these two hotfixes. Applied 957912, the first one

KB957912: Updates for Visual Studio 2008 SP1 debugging and breakpoints

KB967631: When you debug in Visual Studio 2008 Service Pack 1, more breakpoints are generated unexpectedly, or the IDE crashes or becomes unresponsive for about 15 seconds

Here is the stack trace (process explorer) that I get from the threads window when the msvb7.dll is churning.

--- title in process explorer [threads] tab for process --------
cpu:49.28% cswitch delta: 300 to 3500 startaddress: [msvb7.dll+0x4218c]
msvb7.dll version: 9.0.30729.1
--- actual stack trace -------
ntkrnlpa.exe!KiUnexpectedInterrupt+0x121
ntkrnlpa.exe!ZwYieldExecution+0x1c56
ntkrnlpa.exe!KiDispatchInterrupt+0x72e
NDIS.sys!NdisFreeToBlockPool+0x15e1
// shortened stack trace. all of these are from msvb7,
msvb7.dll+0x46ce7 <- 0x2676a <- 0x2698e <- 0x38031 <- 0x2659f <- 0x26644
msvb7.dll+0x25f29 <- 0x2ac7a <- 0x27522 <- 0x274a0 <- 0x2b5ce <- 0x2b6e4
msvb7.dll+0x67d0a <- 0x68551 <- 0x6817b <- 0x681f0 <- 0x67c38 <- 0x65fa8
msvb7.dll+0x666c6 <- 0x6672c <- 0x6673d <- 0x6677c <- 0x667b4 <- 0x63c77
msvb7.dll+0x63e97 <- 0x42c3a <- 0x42bc1 <- 0x41bd7
kernel32.dll!GetModuleFileNameA+0x1b4

This is the list of stuff from 'copy info' in help->about, shortened to a resonable length.

Microsoft Visual Studio 2008 | Version 9.0.30729.1 SP
Microsoft Visual Studio 2008 Professional Edition - ENU Service Pack 1 (KB945140) KB945140
Microsoft .NET Framework | Version 3.5 SP1
Microsoft Visual Basic 2008
Microsoft Visual C# 2008
Microsoft Visual F# for Visual Studio 2008
Microsoft Visual Studio 2008 Team Explorer | Version 9.0.30729.1
Microsoft Visual Studio 2008 Tools for Office
Microsoft Visual Web Developer 2008
Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU
KB944899, KB945282, KB946040, KB946308, KB946344, KB946581, KB947171
KB947173, KB947180, KB947540, KB947789, KB948127, KB946260, KB946458, KB948816

Microsoft Recipe Framework Package 8.0
Process Editor WIT Designer 1.4.0.0
Process Editor for Microsoft Visual Studio Team Foundation Server, Version 1.4.0.0
tangible T4 Editor 9.0
tangible T4 Text Template Editor - T4 Editor
tangibleprojectsystem 1.0
Team Foundation Server Power Tools October 2008
SQL Prompt 4.0 (disabled)

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VB.Net 2008 IDE hanging - MSVB7.dll eating 100% CPU when editing code

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What is the carbon footprint of your coffee?