Acronis is the reason why I lost my old backup of everything I collected before and during university. There was a bug in how they addressed the connected IDE drives, and because of this bug, my source drive got overwritten (including its partition table etc.).
SO, no Acronis products on my computer. I recommend Drive Snapshot instead:
http://drivesnapshot.de/ It's a wonderful too, albeit not the easiest to handle especially when you have to create your own recovery CDs.