I agree getting more air moving in the case is a good idea. There's a lot of heat in there and probably not a whole lot of air movement right now.
When I threw the Asus A8N SLI in the old case there were only two 80mm blue led fans with one in the hole at the top of the case and the other as rear exhaust. I saw higher board temps then cpu temps and said what the... That's when the new case was ordered for the new board. The two 250gb drives in this case never even break a sweat at 31C.
Yes, I'd say those temps are very high. I have a Vantec Vortex HDD cooler and with the fan off my temps are around 44°C, on low it's 33°C, and on high it's 30°C.
EDIT: crap, I clicked on the thread and it took me to the 1st page and I didn't realize that there was a 2nd page...oh well...
When SpeedFan is run just watch what the actual temps turn out to be. Now when you arrive on a thread all you have to do is look right above the first post on the right side or at the botom right to see if there's more then one page. (gee I wonder if this will on page #2 or #3?