Just stumbled across an interesting issue with Windows 7 and "some" Object Desktop component. Maybe...
I'm still working the issue and will report my final root cause analisys, but I beleive that one of the following may be breaking the Sidebar in Win7: CursorFX, Icon Packager or LogonStudio Vista. I just did an upgrade test of Win7 beta, technet release, and Had the new sidebar until I went and reinstalled the above apps from Impulse.
Now sidebar.exe won't load, and I can't even use the control panel applet to view gadgets. No error or anythingg simple no sidebar and nothing in TaskMan either. Ditto for Applications log in event viewer.
Anyone seen this, or able to reproduce it?
Once I get a chance to rollback and test one-by-one I'll post what I find.