Our Toshiba pro L100 laptop ran perfectly on Dapper Drake, and upgrading to Edgy went fine too…..
Then we upgraded to Feisty Fawn and the USB ports broke down after a few minutes of usage, every time, sometimes after 10 minutes, sometimes after one minute.
I switched to Sidux, a distribution based on Debian Unstable (Sid).
Sidux is a great distro for intermediate experienced Linux Users and honestly, its twice as fast as Ubuntu.
Sidux is still under development, and first stable release is expected in a few weeks, as you can read in the release notes of Sidux 2007-02 preview1.