I started using Acronis in 2009, clunky yes but relatively effective. 2010 gave lots of new features and a 'simpler' interface which actually made it more difficult to ensure the right options were set. 2011 has been a disaster, I have re-installed the product several times, have non stop backups which fill a 1.3Tb drive in short time that the software cannot effectively version control - so I inevitably have to delete the lot and start again (not exactly the point of an incremental backup) and now I have a continuous stream of inexplicable instant power downs which seem to be related to Acronis and a PC that runs dog slow (this is an intel quad core with 8Gb of RAM running Windows 7 64 bit btw - so it's not short on horsepower).
Also have you tried restoring files from non-stop backup? I give up - I'll go back to doing things manually I think - at least I know I'll be able to restore the blasted data if I need to. Makes you want to buy a Mac if only for access to Time Machine - a product that is everything Acronis should be - and isn't!
In short - avoid. Backup your data by all means - but find an alternative approach.