My 10.6.2 seems to be working flawlessly. Sound, wifi, sleep - everything. But it keeps bugging me to upgrade to 10.6.5 and I would like to keep up to date. But is it worth the potential hassle? I've heard of people randomly having sound problems and I don't know whether to just stick with 10.6.2 or upgrade.
I decided to go ahead of take the risk. Everything seems to be working just as it was in 10.6.2. For anyone thinking of upgrading:
I installed NBI 20100616212351 then updated using the Software Update tool. Once it restarted and installed the update, the first thing I did was install NBI 20100616212351 again. Another restart and it's done and working flawlessly (so far).
Feel free to delete, merge or whatever.