I've been finding that my ir pen works fine when I start up, but after some 10 minutes it will only give a row of dots when writing - although it will still do mouse clicks etc without any problems. I'm using XP SP3, Bluesoleil BT, a selection of Boonjin Whiteboard versions and a variety of IR pens. I've a suspicion that there's either a Bluetooth issue here, or that my laptop isn't up to the job: if I disconnect the wii and re-connect it, it works fine for another 10 minutes, so it's not a battery issue with the pen. I never have problems connecting the wii with Bluesoleil. Haven't tried a more recent laptop yet. Any ideas out there?