I have problem tethering through bluetooth to BB 8800 even from XP (using IVT BlueSoleil 2.6 driver); however tethering to BB 8800 works fine after switching to native XP driver (on the same hardware) following this guide: http://www.blackberryforums.com/blue...-adapters.html.

This indicate problem is in driver and if someone is able to figure out how to emulate XP bluetooth native driver on N800 / N810; it should fix problem tethering to BB for good.