Help on JVM hang

Hi folks,
    I'm posting this, since I know I can get help only from this community. My application is a heavily multi-threaded java application which is runs in Linux with the following configuration
 
OS - RH9
Kernel - 2.4.20-30.9smp
glibc - glibc-2.3.2-27.9.7
JVM - SUN 1.4.2
 
My applications HANGS after runnning for some time. Do you any work arounds for this problem
 
"Thread-11" prio=1 tid=0x6a920368 nid=0x999 runnable [6bc7b000..6bc7b854]
        at java.io.ExpiringCache.cleanup(ExpiringCache.java:94)
        at java.io.ExpiringCache.get(ExpiringCache.java:51)
        - locked <0x46e82cb0> (a java.io.ExpiringCache)
        at java.io.UnixFileSystem.canonicalize(UnixFileSystem.java:137)
        at java.io.File.getCanonicalPath(File.java:513)
        at java.io.FilePermission$1.run(FilePermission.java:218)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.io.FilePermission.init(FilePermission.java:212)
        at java.io.FilePermission.<init>(FilePermission.java:264)
        at java.lang.SecurityManager.checkRead(SecurityManager.java:863)
        at java.io.File.exists(File.java:678)
 
I dont get this problem if I run with LD_ASSUME_KERNEL=2.2.5 setting. But the applications runs very slow( around 50% slower). Does anyone has come accross this problem ?
 
Reg
Veda