I installed TI 9.0.3677 on my home WinXP PC as administrator, performed a full backup, and scheduled a daily incremental backup at 5:15PM. My wife, a limited user, was using the computer at 5:15PM and reported no problems. She finished using the computer at 5:30 and left it running. At 7:30PM when she returned, she complained (by phone, I was away) that the Acronis Icon was in her system tray and the PC (a snappy P4 running with 1GB RAM) was running painfully slow. There weren't enough cycles left over to switch to admin, so I had her unplug the PC and reboot. When I checked the log in the morning, it appeared TI never got further than the "Locking Partition C:" message at 5:15. Does anybody know what can cause TI 9.0.3677 to get stuck like this?