I like the hunch, and I want to try it, but I have a couple problems. First, I've never been lucky enough to witness this problem on my own machine, so I won't know if I fixed it unless I get a lot of test subjects, and then they'll all have to go a month without a lockup to convince me. Second, we have 550 users and maybe a hundred installed apps, so there would have to be a very lengthy and comprehensive testing cycle before I could even think about taking down JVM as I don't quite understand how the JVM is interacting with Infopath. We are having trouble launching forms in the Infopath client. Are you launching in Infopath or in the browser (web-enabled Infopath forms)?
Thanks for the inspiration, you've given me something to work on, anyway...