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i tried every different kind of fix (clear various caches and data, restart, unmount sd card etc) and none of them worked. yesterday after i'd given up it randomly resolved itself. weird

This is seriously doing my head in, I want to download apps but can't...
Tried signing in and out of talk.. no luck
Tried signing in and out of Google UK Homepage... no luck
Tried clearing Cache/Force Stop etc.. no luck
Tried turning phone on and off.... no luck
Check out HTC - Support There is new firmware (1.32.405.3) out today, it doesn't say anything about the market problems, but it might help.
FJ
That's been out for a good few days now. I installed it nearly a week ago and I still had the market issue recently.

Still not working
JUst noticed, I have been posting in the wrong forum. Thought I was in desire. I guess this issue affects all android users though