Ok thanks for the info. I've now downgraded to 1.50

And the moral of the story is don't use windows vista - use my xp laptop

Lastly, i'm sure this is plastered over the internet everywhere, but as i'm here: How do i install cfw on my 1.50 ofw. I've been to dark alex's site, but all the releases i've looked at need a previous level of custom firmware (e.g 4.01 needs 3.80, 3.80 needs 3.52, etc)
Thanks,
Nappymonster