The vast majority of problems I am seeng posted here are Windows 7 64 related. I am experiencing practically none of these problems with 32. I would also be willing to bet that most of the problems with 64 is not with the OS but with hardware and software makers who dont really want to put in the extra effort.
I have used MS OS's since 95, a very good system for it's time (never was 64 bit), and I am very impressed with this Win 7 32. I started seeing the writting on the wall with XP 64 and its multitude of problems.
With a good processor (3 gig dual core or better), 4 gigs of ram (yes I know the 32 bit will not see over about 3.5 but still better than 3), and a good video card with a gig or better memory I dont think there is much of an advantage with 64 and loose all the compatability issues....what works, works.
Dump the 64 bit OS get 32 and ejoy this new OS at its best...
Just my opinion.