Two month ago, I tried to install Squeeze on a new laptop. Neither the ethernet nor the wifi were supported, and that can make a netinstall very hard to do.
Both were supported in 2.6.33 but were not yet added to 2.6.32.
Anyway, I always update to unstable right after the end of testing install (read minutes after). Testing is outdated as soon as it freezes (sometimes even before).