I have a (UK Three network) Samsung Gallaxy S2 that I have upgraded to ICS using Kies. Everything seems ok however i have a weird bluetooth bug. When i connect up to my bluetooth Sony car stereo which previously worked fine - (this connects to media and phone functionality), it works for 15 mins then reboots. However i notice as soon as it connects using bluetooth, that everything slows down and becomes fairly unresponsive. After playing around a bit, i found i can have a bluetooth connection to phone functionality only, and the phone seems fine, however as soon as i give it access to media then the phone slows and then reboots. Is anyone else having bluetooth problems .. ? - As currently I don't know whether it happens to be an unlucky clash between my stereo and ICS or there is a general issue with bluetooth in ICS ..?