I upgraded my OOo - I'm on FC1 incidentally - using the standard Linux download rather than an rpm. For some reason (something I did I'm sure!) the update didn't work, so I uninstalled and started afresh which worked, although I lost the menu entries and file associations.
Soon put that right - luckily the only formats I use are the native ones for own documents, and doc, ppt, and xls for work
- and the newer version does seem faster.
Out of interest where did you find your rpms? Might have saved me some work...