Anyway... I got an 808 out of a new batch and I think it still has the same HSPA problem, because it crashes about once a day. It does take a lot of effort to make it do it deliberately though, so I think it may be caused by some fairly specific network packet rather than just a great volume of data. Noki are not saying anything of course.
I turned off HSPA, as 3G gives me 300-400kbits/sec which is plenty.
The camera is amazing. I posted some pics
here.
What Nokia seem to have done in their last firmware is to change the HSPA annunciation from "3.5G" to "3G" so that people can no longer tell if they are using HSPA so they can't complain about it

The only way to tell is to do a speed measurement on a download from a known-fast server; HSPA is about 10x faster.