well, i'd go ahead and get the patch due to the many bug fixes it makes, but i'd recommend getting the patch from a third-party in *.exe form instead of the autopatcher. check out sites like dlx.gamespot.com and
www.filefront.com) for the self-extracting executable. ;)
and just a notice, you may want to try installing any mods after you patch the game. i'm not sure if it'll make a difference, but its definately worth a shot.
if you need more help, don't hold back from asking. that's what we're here for. :D