Im have a late 2008 MBP 2.8 core2duo and get much higher temperatures with Lion.
74/80 celcius just using Chrome, thats more than 10 degrees higher compared with SL.
So what are your temps with Lion?
I don't mess with fan speed or anything like that, I figure Apple's got smarter people than me who know when my fans should come on.
I installed last night to test my temps were a few degrees cooler the UI seems much quicker unfortunately Logitech does not seem to have a driver for my mouse which is a deal breaker for me I can't live without them extra buttons...
Well, I wouldn't credit them too much. My machine runs at up to 130F without fan control. The screen starts getting graphic glitches and if I don't run the fan at maximum speed my computer freezes. I am glad some people with newer hardware are doing better.
Something wrong with it then.
My machine is three years old and used heavily all day every day. If it got glitches and freezes under load I'd be taking it in for repair.
USB-Overdrive runs fine here with MX518+Lion GM
Are you still getting high temps? Initially you temps might be higher because spotlight is indexing.