Thanks for starting this thread. I've been having these same problems off and on and I couldn't figure it out until today. I was using the built-in windows backup program in the interum. Anyway, I'm using ATI-Home v11. I used v9 without any problems for quite a while. Upgraded to v10 but then upgraded to v11 shortly afterwards. My last successful backup (monthly backup) was on 02-04-2008 and it was using compression. My daily backup started to fail soon afterwards but it was using high or max compression. Now that I turned compression off, it seems to work fine - but my backups are large. I'm backing up about 600~750 GB total so any compression sure does save the space. I deleted my original jobs and settings thinking they were corrupt. Heck of a time trying to figure out how to get out of the hung up situation but it is easy (but annoying) now. I just thought I would put in my $0.02 worth of knowledge. I should include this info too.... 1. Running WinXP Pro SP2, ATI-Home v11.0.8053 2. Partial backup or selected data folders with any compression selected other than NONE. I don't think the disc / partition image stalls w/ compression. 3. No compression seems to be the workaround but that is pretty useless since I can use Windows Backup w/ compression and get a MUCH smaller backup file.