[LUGSB] upgrading debian unstable

[Mark]

I installed debian unstable on my desktop the other day.  After a little 
bit of trouble with getting the sound to work, everything have been 
really great.  However, there have been a few updates to the unstable 
branch since I installed and I'm a little confused about how to go about 
upgrading.  Should I be using apt-get upgrade or apt-get dist-upgrade?  
'upgrade' holds back a few packages that 'dist-upgrade' lets through.  
Should I just avoid any upgrading during the transition to gcc3.2?  Does 
anyone have any experience with debian unstable?  How should I go about 
upgrading?