>Has anyone ran vfp on Ubuntu Linux without any freezing or speed issues?

I assume you mean you are running VFP executables on Windows workstations, but you're storing VFP data files on an Ubuntu server?

The first thing I'd look at would be antivirus. Make sure no copies of AV on any computers are set to real-time scan the VFP data folder(s) and temp file folders if the latter are set to be server folders. With AV, even one computer real-time scanning data files can potentially screw up all the others.

My understanding is current versions of Samba work well as VFP data file hosts without any special tweaking required. A member on this forum, John Fabiani, has considerable experience with this general scenario (don't know about Ubuntu in particular), you could try contacting him.