Lavish Software

That was what did it for me, hope it fixes your issue as well.

I changed the settings for WinEQ2, in that I set it to run in WinXP SP2 compatibility mode. That seems to have solved the issue.

I'm running a quad core w/ 8GB of ram, even tried setting each toon's cpu affinity to a separate core without avail. Also, as far as desktop effects go, the only thing I'm running is the sidebar, which could theoretically be the culprit. I'll experiment with it later, thanks for the suggestion. Read...

My setup: 1 normal EQ client, for my main, 2 instances of WinEQ2 In the Windows 7 Beta, I had no problems. Now, in Windows 7 RC, I'm seeing both of my secondary accounts "freezing" momentarily, when switching to them from my main EQ client. It is quite odd. The screen turns gray, which is Win7's way...

Was having this same problem, thanks for the solution.