I've got a problem with ZoneAlarm Free:
If the firewall is installed, I have problems with syncing music from iTunes to my iPhone. The songs are always damaged.ZoneAlarm Version:9.2.105.000
If I disable the firewall (under "Firewall", "General Settings" --> off) I have the same problem.
But now: I uninstalled the firewall and the sync works correctly.
After this, I installed ZoneAlarm and now have now the problems are back.
Currently I can's sync because I will not uninstall the firewall.
I'm german and using the german version. Sorry for my bad english.