I have installed RedHat 9, which also installed java 1.3.1 (gcc version, I believe) I then attempted to execute some java code that had worked fine on RH7.2. This reported an incompatible type on the stack. As RH7.2 did not install java, I had installed from IBM's rpm for java 1.4. This seemed to work fine on RH7.2 I have now installed this on RH9, overriding the default path to java (i.e. placing /opt/IBMJava2-14/bin at the start of $PATH) and executed java -version This reports : JVMDG217: Dump Handler is Processing a Signal - Please Wait Any ideas ? Mike