I have my 3g connection via bluetooth from my mobile and I have 3 or 4 websites that the n800 wont connect to this way.

Its strange as it will do it via wifi at home, and these sites can be directly accessed on the phone itself.
The same 3g sim card inserted into an usb modem will access these sites via a laptop.
Ive checked that the sites were not down on another internet connection at the time I could not connect via the n800.

Any clues anyone, thanks

btw this is a great site, thanks for the input everyone

Which sites?

ebay, misticriver, iaudiophile, just general ones