FreeRadius and PIX 520 accounting

Hello everyone This subject was once asked but I've never seen a clear answer about it. I'm using FreeRadius 0.9.3 to authenticate our VPN users connecting through our PIX 520 with OS version 6.3. I'd like to enable accounting also so I can restrict only one connection per user simultaneously. Last I checked, there was some kind of incompatibility between the packets the firewall is sending and what FreeRadius is expecting to recieve. I wanted to know if this is somehow "patched" in 1.0.4 or if it will still not work. Also, if it's not fixed in freeradius, anyone knows if upgrading to the OS version 7 will fix it ? Thanks in advance. Lior Marantenboim.