[LBo] hard drive failure?

[Jackson Robertson]

So lately I've been having a bunch of hard freezes with my system (computer
totally freezes up, no mouse, no keyboard, have to press the power button on
the tower to restart). I tried a new more powerful power supply but the same
thing. I tried my older graphics card (which still works fine) but same
thing. I was backing up some data (moving it to another harddrive) and I
kept getting random input/output errors, random in the sense that it wasn't
always with the same files, sometimes I would get these errors other times I
would get no errors or errors with different files. These errors would also
cause my system to freeze up a bit because I would get uninterruptible
processes. So now I'm guessing that my harddrives are f*cked. How do I check
my harddrives for failure? Are there tools out there that will check things
out and let me know whats up? Thanks for any help.

Jackson