Service pack 2 software problem

We just upgraded our net and installed xp pro with service pack 2 etc. We now have 2 problems I cant seem to find and have traced both to service pack 2.

#1: Emulator program (MiniSoft) to run Unix database will not allow use of most f-keys. Keymapping is set correctly, but even vendor cannot find problem.

#2: PRC program, another similar style emulator, but for telnet locks up off and on. This may be a bandwidth problem, but started when SP 2 was loaded. Seems to have trouble opening port 152, then hooks in and later locks up with no reason. Any assistance would be of great help.