I just installed the trial version on XP, 4GB machine with 2.8 Dual core. Installation seemed to go ok and initially worked. However, on reboot,
1) I get an error when I try to access program permissions, site permissions. All options will respond with an error of "access violation at address 00468DE3 in mod internetaccesscontroller.exe read of address 0000000057"
2)When I did get access during installation, it would not accept any program names for allowed programs. I could explore to the name, but when I selected any program, it returned an error of "image size invalid"
This is a relatively recent XP installation that is not experiencing any other issues.