My backup server is Gentoo, as are a couple of other servers and
workstations it backs up. It's been running steady as a rock for years.
The only issue we've hit recently is not being able to get incrementals
on machines with updated tar packages. We get Level 0 every night. We
stay pretty on top of patches from Gentoo, and we've seen it on multiple
systems. We're also seeing it on Windows 2003 boxes running amanda
under Cygwin. I don't think that has anything to do with the server,
only with the client machine(s).
We are still at 2.4.5.
LP