I am using TI 11 Home Build 8105, Vista 64 Bit SP1, one Raid10 array (4 disks) for system and data, one usb 2.0 hard disk for backup. Every month i proceed a complete image without problems. Every week i would proceed a backup of my data folder witch contains all user files like .pst, .doc, .xls, .mp3, .wmv and so on. Problem ist like this: Backup starts normaly, usb hard disk light is blinking. At one time the backup stops, cause there is no change of percentage of status, the usb hard disk light is off. I can wait all night long, but nothig happen. I cant stop the backup, trying to klick the abort button doesent work. I have to kill the TrueImageHomeService.exe task. There is no entry in the Acronis or Windows event log. I tried it a lot of times and at every try it was another percentage where it stops. At one time i get it to finish the backup, but no more time after that. Interesting is, that the problem always seems to occure when big (> 100 mb) media files like audio (.mp3) oder video (.avi) files are actually backed up. When i cut them out from backup it works. But that could not be the goal, then i dont have to use a special backup software. Then i can copy all the files with the explorer. And i also want not to do a complete image every week. I tried 1. to backup on the local hard disk, 2. to end all tasks that could use that backuped files 3. to use another usb port, 4. to create a new backup task or do a manually backup, but nothing changed. In the internet there are some people describing the same problem, but there were no answers for their problem. The tech support of Acronis didnt answered yet to my hotline mail. Is the someone out there who could help me.