Did you do the upgrade straight from another Ubuntu version over the
net.
My upgrade was over the internet this time, from Feisty 7.10. I tried
upgrading before with 6.06 LTS to 7.04 beta and it was vey unstable.
When the last upgrad to Feisty 7.10 I did the complete fresh copy
install from CD, but doing this I lost all my deesktop personization.
This time every thing appears to be pretty stable without starting from
scratch, (blowing every thing with away to do a fresh CD install). I'm
very happy.

Like you said David, if only a few packages are acting up, then this is
a very tolerable upgrade until a patch is available for the fix.