This without a doubt, the worse software experience I have had in 15 years. Continual BSOD events. Am running XPsp2 on a new high end PC. Spent two months sending all kinds of reports to tech support (Anton) with no resolution. He gave up, but rather than admit that his knowledge had been exhausted, and seek the advice of a colleague, he just stopped responding. I thought the problem may have been with my third HD which I use solely for backups. The hard drives are: 160MB, 160MB, and 80MB. All Maxtors. Even though checkdsk, and Maxblast reported no problems, I noticed that the BSOD would stop if I turned off the 3rd hard drive. After three weeks, and spending $75 shop labor to replace the 3rd hard drive, everything appeared to be OK. Was even able to make an extensive back up. Then about a week later, the BSOD reappeared. Several times during boot up, and occasionally, any random time later. I decided to look at this Forum. Was surprised to learn that build 826 was available, even though when I registered I asked to be notified of any up dates. Never was. The build I was using was 796. Downloaded build 826 without any problem. The install process produced a BSOD. All such BSOD events showed machine check exception. The install process produced an invalid icon, but on replacing it with a valid one, and clicking on the TI icon, the splash screen came up for a few seconds, then BSOD. Since I do have a need to locate and restore some files, I can't tell you how disappointed I am with this product. Any suggestions on alternate good backup software?