what are the differences among classic/libjvm.so, server/libjvm.so, and client/libjvm.so?

Hi, Dear ALL:   In the linux JDK, there are 3 libjvm.so,  what are the differences among them?   (classic/libjvm.so, server/libjvm.so, and client/libjvm.so)   Thanks a lot.    

jdk1.3.1 crash on Linux

Hi, Dear ALL:   I have two problems that need great helps.   1.   On my Redhat Linux computer, when I run blackdown-1.3.1-FCS java, I got the JVM crashes time to time at about 30% frequences.  The error message says:   **