After having been very frustrated since I got my new SE T630, I'm now a happy guy again. The problem showed up when I tried to connect the phone to my Dell Precision M60 via bluetooth. I could pair'em and browse files on the laptop via the phone, but the phone never revealed any of it services to the laptop. I tries ALL the com-port tricks out there, but none helped me. The only thing that made my stuff work was to install the Bluesoleil-drivers instead of dell's bluetooth drivers, but since Bluesoleil isn't licensed for my module it was limited to 5 MB transfer.
I then heard about XP SP2, made a clean install of XP (no updates before SP"), installed SP2 and fired up the bluetooth-stuff. It found the T630 immediately and now everything works like a charm. Synch against Outlook, dial up.....
Just for your information :-)