[ALUG] "Warning: we recommend you do not upgrade to ubuntu 10.04"

performance / high load average problems - mint 9 too? I read this last evening about ubuntu 10.04 - any of you developer folk tested it by any chance? http://linuxforums.org.uk/ubuntu/warning-we-recommend-you-do-not-upgrade-to-... I found ubuntu 10.10 unusable and yet these folk say it's ok. I was wondering if it was solved for xfce Mint 9? Or is this why Mepis decided on debian distros? yours james