N900 "zapping" the bluetooth functionality in the ...

Interesting and potentially (for Nokia) expensive problem here. I bought a pair of BH-905's in September to go with my N97. All worked perfectly, got an N900 about 3 weeks ago and linked up the headphones to that and again initially no problems but twice in the last week after having taken a couple of calls whilst listening to music, having ended the calls the phone wouldn't respond to input from the headphones although the phone still showed the connection between the two active. Rebooting the phone cleared the connection but although the headphones had a full charge it was not possible to turn them on again, the bluetooth functionality was completely dead although the active noise cancellation was still functioning and the headphones still worked with a wired connection (although the N900 didn't register headphones connected and the function buttons on the headphones didn't work). Nokia replaced the first set of headphones no questions asked, and I'm going back there at lunchtime to get my latest pair replaced but obviously if this is going to happen everytime I get a couple of calls it's going to become completely impractical to use them, so any suggestions/theories? Apologies for the essay but couldn't think of a way to condense the explanation.

you're not alone.. this is apparently a common problem with the BH-905.. irritating since they are the most expensive head phones Nokia make.
http://talk.maemo.org/showthread.php?t=36293&highlight=bh-905
I've been having the same problem.. making or receiving calls occasionally crashes the headphones.. Using the three button reset helps but can mean you need to repair the headphones with the N900..
The bluetooth technology inside the N900 is based on a Linux project called Bluez.. it is the standard bluetooth support in all Linux systems so you'd expect it to work well with any headphones.. This could be a really strange bug in the BH-905 that is being triggered by the bluetooth stack in the N900 or it could be a strange bug in the N900's hardware drivers that is causing the problem.
Either way, it is likely to be fixed in the next firmware update.. 
My BH-905 worked well with my N97 phone.. never had a crash problem when interrupting music with an inbound or outbound call.. but with the N900 it caused problems almost from the start.. I don't think replacing them will help.. but an update in software would be good.. fingers crossed that'll be very soon

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