64 bit system with 32 bit Java

Intel Core 2 Quad CPU Q6600 @2.4GHz
4 gig memory
64 bit operating system, Windows 7 home premium

running both the latest version of 32 bit java and vassal

module Kiev to Rostov 3.0, and Army Group north

I wonder if anyone else has had problems with vassal and 64 bit system. I am running windows home premium 64 bit with 32 bit java installed. Vassal will freeze up (after some minutes of gaming) and I have to use task manager to get out. I get a note though about “Java platform SE binary not responding” Should I be going with the 64 bit Java? Many thanks for any light you can shed on this.

it freezes if I try to save the game after playing for a while (online via skype)