dump/restore and ext3?

I'd like to backup an ext3 filesystem. I'm fond of the interface for
dump/restore, but the man page says it's only compatible with ext2. And
dump is at version 0.4-something, which doesn't give me big warm
fuzzies. Also, I've ran across a few posts here and there on the 'net
claiming that dump is not reliable on 2.4 kernels for some reason. I've
done a couple tests and successfully dumped and restored up to 20 gigs
on an ext3 filesystem without any obvious problems.

Has anyone encountered any issues with dump/restore on Linux? Or have a
good explanation of why this might be a bad idea?
Thanks,
~M