yes, apologies, i did mean 10.7. is an upgrade to os x 10.8 recommended?
no, sorry. lots of horizontal green lines, about 1cm part. there were some flashes and dots too. once i got the drivers installed they disappeared. we've had an ATI Radeon HD 5770 and GT120 installed previously. i ran the cuda installer prior to running the downloaded installer
we seem to be running happily now, catalyst made it through the weekend. unless there's some performance gain or other advantages to be had by upgrading this is probably a good point to leave well alone, but i'd be happy to have your advice...
thanks again for your time and expertise!
S