Similar to the email I sent regarding my Win2K SP4 box, I'm having uninstall issues on my Vista system using an administrator account.
The issue on Vista is that after uninstall, it doesn't appear any of the Inkscape core files was deleted. Worse yet, it left the shortcut on my desktop but then Vista refused to delete the shortcut giving an error that said that the shortcut was no longer in "C:\Users\Public\Public Desktop" and refused to delete.
As many things appear to fix themselves on Windows by our friend The Reboot, I did, and it solved the unable-to-delete-desktop-shortcut issue. Don't know if the Inkscape core files would have then been deleted (would it have left my theme customizations intact ??).
Don't know what the issue is, but maybe the uninstaller needs to trigger a reboot in order to not cause these problems....and please don't kill off the 7z's in favor of installers.
Jon