It depends on how many files, how big they were, etc. It may very well be normal, but you left out key details that allow for a definitive answer.
I have Windows Vista Home Premium on a pretty new HP computer and backed up my files through Help. It took 20 disks and 4 and half hours. Is this normal? I didn't know it at the time, but another computer was on the house with a wireless modem. I want to upgrade to Windows 7, but I am researching threads on CNET.