Thanks for taking the time to answer my request.
In fact it was so long ago that I have in the meantime got rid of the drive and laptop and moved on.
However I cant help but notice that you posted the same thing to six differnt threads...are you a matsushita employee, because to be honest providing a link to a so-called support phone number is a joke. Matsushita/panasonic want nothing to do with supporting their products. I rang and emailed them several times and they gave me no help whatsoever. Telling me to 'refer to my notebook manufacturer' is all well and good but what if they have gone bust, as was the case with me.
Furthermore, it is clear from my investigations that some of the problems with the uj-811 were not notebook specific, but down to crap design, and I think Panasonic know this. There are mentions all over the web of how the drive fails to write at more than 8x, how it produces crap disks, how it stops working. Also, ever tried to flash the firmware...its impossible because they encrypt it to stop people fixing the problems they cant be bothered to.
These problems arent something to do with my laptop, or even all laptops from one company, these are to do with Panasonic/Matsushita and you can guarantee they want nothing to do with you if you have these problems.
All in all the drive is a piece of crap and I would never buy any laptop with a panasonic drive again on the basis of my experience with it. I suggest you do the same.