I'm encountering the same problem, and I *am* using JRE 1.3.1. I'm running Mandrake 8, and *attempting* to run LimeWire 1.7.

Here's the exact error I'm getting:

Couldn't find or load essential class 'java/lang/Object' java.lang.NoClassDefFoundError java/lang/Object
./runlime.sh: line 11: 5052 Aborted java -classpath . RunLime

Any assistance would be greatly appreciated.

- Stealth Dave