Yeah, all the computer magazines have even stated that Microsoft recommends usin the 32 bit version of Office over the 64 bit. As the 64 bit version is new, so therefore compatibilty with Office addins or other software that works with Office will have issues. I'd stick with the 32 bit version of Office for at least a year and possibly longer for the other software to catch up. Look at Windows, how long has it been since Microsoft came out with the Windows XP 64 bit version. It was either 2003, 2004 or 2005. How many actual 64 bit software is available today. Not much, compared to x86 software versions. Only IE and a variation of Firefox have 64 bit version browsers. Adobe finally came out with a 64 bit flash player in August. Not many people know about that one, because it's called Adobe Square instead of Flash Player. All the software available still don't take advantage of multi-core cpu's What it's going to take for these software companies to catch up with 2010 technology is for Microsoft, Apple and Linux to ditch x86 versions of the operating systems. Until something like that happening, the software companies aren't going to change anything, as they won't have to until , they're forced to. We'll be seeing 96 or 128 bit operating sytems in 3-7 years probably. I mean we can already purchase 6-core cpu's. 8-core or more is on the way possibly even in 2011, as Intel and AMD have new cpu architecture in place. AMD is supposed to come out with a new motherboard architecture by next summer. It's about time these various software companies realized it's almost 2011, not 1997.