I recently posted a question about running more than one JVM where my machine would thrash horribly. I reinstalled RedHat Linux 5.0, the latest glibc and v1 of the JDK 1.1.6. The performance difference was incredible! It ran acceptably without a JIT! Now, another question: after about an hour of use using javac and java, I am now experiencing sig seg v coredumps. The jre does not work either - same problem. I am willing to reinstall Linux, glibc and the JDK if necessary. Has anyone experienced this? Thanks to all your help in advance!