I'm sure the phone had a fault in it...but my comment still stands - although probably just for that particular instance of it.
Phone calls could be made but you couldn't hear the other end and they couldn't hear you - or you could transfer the phone to speaker and you could hear them but then not transfer it back to handset (and then when you hung up the call, the phone still thought the speaker was on). Bluetooth didn't work - it would detect devices but wouldn't accept files from them not would it send files to them. Blue&Me would detect the phone - the phone book would sync but then it would disconnect and not reconnect or when making a call you couldn't hear anything - when taking a call the Blue&Me would answer the call but the phone's speaker would activate (and you still couldn't get them to hear what you were saying).
To be able to make a call and get people to hear me and me hear them, I had to switch the phone off and restart it and make the call within 5 minutes, otherwise the issues detailed above happened.
The SE PC software is faulty - due to some DLL that is shipped with it - but SE won't acknowledge the issue so anyone (from what I've read online) using this phone can't synch the phone up or back it up. If you do manage to find a previous version of the software, it doesn't recognise the phone.
SE used to make very good phones (they probably still do) however this particular model was utter utter gash.
It got replaced with a Samsung U900 Soul - nice looking phone but the UI isn't as nice and I've not yet paired it with Blue&Me.