Any issues in upgrading from 3.0.10 to 3.2.1?

Dear all,

I am about to upgrade RT in a heavy production environment and I cannot
afford to run into upgrade problems once the downtime of the system
started, propably have only about two hours or so.

Are there any serious obstacles ahead that anyone knows about?

Thanks a lot in advance.

Linux Suse 9.1
MySQL 4.0.18
Apache1 and mod_perl
already upgraded Perl to 5.8.3 and recompiled mod_perl