First i'm sorry for my english i hope it still understandable
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for two days my N900 act strangelly, when i play music or video
and i plug in headphone the sound not deliver to N900 original
headset it still play through speaker/N900 no detected my headset.

and then i try to find out information using
status headphone was connected

but, if i play qradio then audio would deliver to headset, and sound
hear not normal. i can't control volume, or system sound seem not working

and then i do some trick to pull out and plug-in again and sometime it work
but sometime not.

Does anyone here ever experience this problem..? and how to fix this.?
i have no gut to disassembly this phone to figure out the problem by myself without any guidance.

Any help appreciated. T.I.A