On most distros, openafs 1.6.x will install with $packagemanager $installcmd openafs-client. Before 1.6, installation could be a bit hairy (a few bits of manual config, kerberos needed manual local configuration), but nowadays basically everything autoconfigures through dns and you really only need to set a default realm/cell (even then, just for convenience). I hear the 1.7.x branch has made huge strides for Windows users too.
I think openafs gets a bad rap because pre-1.4 was kind of a pain to set up, and the early 1.4.x releases were pretty buggy (my cell directly inspired several of the early releases since we were just getting going and took the plunge early on). Nowadays (as in the last five years) it Just Works (tm) for the most part (certainly true of the client, and as true as it can be for a complicated UNIX server for the fileserver).
"The only way I can lose this election is if I'm caught in bed with a dead girl or a live boy." -- Louisiana governor Edwin Edwards