I have same problem with my Archos 43 Tablet, and try to connect a Bluetooth mouse (type Genius MT900BT) to have a cursor. But I can't connect with this mouse (On my Samsung Galaxy Tab 2 10.1) there is no problem.
You try other things already ?
I like to use my samsung Tab as remote control for the Archos 43
I never thought of connecting a bluetooth mouse! Good idea!
All I've ever tried was contacting tech support, to which they suggested updating then reinstalling the firmware, which only made things worse! Today, I received tablet #4 & so far, it works with the tv! I guess 4th time is a charm?? I'm not updating the firmware though.. not unless there is some way to set it back to the previous version.