I’ve heard that there have been problems with using this with Fast User Switching, has this been fixed yet? So far I really want to use this one but I’m unable to due to the fact I rely heavily on fast user switching.
If it hasn’t been done yet, is there a changelog available I can use to see when it is fixed?
Hi, pls try the beta version,it supports fast user switching.Hope this helps.
It had actually been implimented 2 beta’s ago 
We are currently on CPF Beta 2.3.2.21.
What's New in 2.3.1.20 BETA? --------------------------------------------------------------------------------------- New! Windows XP Fast User Switching support
- New! File submission to Comodo (“Security->Tasks->Miscellaneous” interface can be used to submit multiple files to COMODO.)
- New! Popup frequency level(During the installation of CPF, users will be able to define the frequency of popups, which will affect created rules),
- Improved! Self defense(protection of self registry keys,more resistance to process termination attacks)
- Improved! Application monitoring(smarter act as a server handling, options to skip loopback TCP/UDP)
- Improved! Performace of the firewall is much faster than before(This improvent solved AVG email scanner issue as well)
- Improved! Memory usage of CmdAgent has been decreased by 3MBs
- Improved! Interoperability of CPF with sandboxing software
- Improved! Default network monitor rules
- Fixed! Bug causing repeating “Signature changed” messages
- Fixed! Bug causing CPF not to remember some popup
- Fixed! Bug causing BSOD if secure boot option is selected