FreeBSD Versions 4.10 vs. 5.2.1

[freebsd at solisix.com]

Just a quick questions. I've been running into a few problems with 5.2.1 not
being very stable and was thinking of reverting back to 4.10. I usually run the
current versions from the ports collection, such as Gnome. I was wondering if
this will be a problem? Also, what will I loose when I go back to 4.10. Also,
is 5.2.1 faster or is 4.10 faster and more stable.

Thanks,
Bruce