I've got my N810 tethered via bluetooth to my N80. I'm using "3 Mobile Broadband" which works perfectly until i no longer have 3G signal and only GPRS is available. A connection can be made but when i try to load pages in the web browser, they never load. However, if I browse the web on the N80 itself, the pages display fine. Any ideas?

I'm using the following settings:
Connection Type: Data Call
Dial-up number: *99#
Username: <blank>
Password: <blank>