Mozy Back-Up Crashed my computer

I installed MOZY FREE Backup software on my computer by following their instructions.
After installation, my computer kept freezing and then I got the Windows Blue Screen of Death!
Basically, MOZY FREE Backup CRASHED my computer. I could not even do a system restore. I had to restore my computer from scratch. I am still in the process of putting back all my programs and files, this is very time consuming.
Furthermore, after I backed up my files, I could not retrieve them using another computer. It kept telling me that I had to register and install MOZY Backup, it just would not retrieve my previous registration.
I am still not able to retrieve my files. Luckily, I kept local backups on some DVD's. MOZY may be free, but there is always a catch. Please be aware Mozy free backup could crash your computer?
Maybe that's how they get you; then they tell you have to purchase one of their plans???
FYI: I have 2GB of RAM and a 2.0 GHz AMD processor and it still CRASHED it...