questions:
1. to upgrade from 0.8.1 to 0.8.2 are the commands simply "sudo apt-get update" followed by "sudo apt-get upgrade"?
2. how do i check bitcoind version # from the command line?
For point two, run
bitcoind getinfo
. The version will be listed at the top of your output.
Re point one, not 100% on this myself. Am looking into it and will let you know what I find - unless someone else here could help??