My apologies i thought you were posting 2 of your computers temps, then comparing one, saying it was running a lot hotter than normal. however i dont think you have a problem!
This is while playing music in iTunes, chatting in Adium, surfing the net in both Shiira and Firefox, Mail is running, Dashboard is running 4 widgets, editing a company site in Rapidweaver, using ToyViewer to enhance a few small images, etc.
I ran it for 10min and my temp is 74C on a MBP C2D 15" 2.33.
i hope somone can post the same on a 17" as ihear they may run coolers. also i have Invisible Shield Full Armor on my MBP and would like to find out if that adds more heat.
here's a screen shot - this is under somewhat regular use, although the average temperature of CPU A, i would say, hovers around 53, not 58. fans running around 1500/2000.