Been running Steam through Wine (bigger selection of games) up to now, so I have no idea whether it would've worked for me in 12.10, but in any case, the Linux version of Steam is totally nonresponsive. I tried removing all related packages and .steam files from home directory and still nothing. Can't interact with the client to log in at all.
Running from terminal produces a handful of errors but other people have claimed that they are able to use the client fine despite these so I'm pretty confused.
Running a fairly vanilla 13.04 x86-64 with Unity &c. &c.