Permission problems after install of F16 comming from F14.

[Erik P. Olsen]

I have a number of F14 partitions which must be mounted unchanged on the new F16 
system. It turns out that I get unexpected permission problems with this 
approach. I use the same user name on both systems but on F14 I got userID 500 
whereas on F16 it became 1000. I wasn't aware of that but learned it the hard 
way. When I chowned the permissions to 1000:1000 it worked on F16 but now not on 
F14.

What is the proper way to fix this problem? I am tempted to reinstall F16 and 
force my userID to 500, but the system warns me not to create userIDs < 1000. It 
is not feasible to clone the partitions due to space constrains so I am not able 
to have identical partitions with different permissions.

-- 
Erik