will battery backup cause computer failure

[tjk]

I hope this isn't too OT...
For many of you this will be a question with a simple answer, but I need to know:
If I have my computer battery backup sitting on the desktop computer case, will it cause problems? For example, will I get harddrive errors, floppy disks erased, etc... (If I had another convenient place to put it, other then on the case, I wouldn't take the risk.)
So if the answer is: that it could cause problems, is there some way to insulate the computer from the computer?

[shad0w_walker]

As far as I am aware that shouldn't cause any problems for a UPS to be ontop of a case. As long as it is well built (UPS' tend to be very heavy with the batteries crammed in)

[CharlesA]

I have all my battery backup units on the floor as they are (somewhat) heavy.

It shouldn't cause any problems with the PC but I have heard that they can cause issues with wireless signals (RF interference, probably).