I recently installed Windows 7 on my desktop and setup two users. While my partner can launch and use SL without issues, I cannot launch SL (no error messages, nothing comes up at all, vanishes from Task Manager within a second or two). This happens only when I log on to the desktop with my windows account. I can log into SL from the same desktop using my partner's windows account and my SL account. any ideas? P.S. Both accounts have administrative privileges in Windows 7. <Update> I tried installing Phoenix - same issue - silent crash)