CentOS - Jul 2007 - centos5: NFS panic during unmount

Hello,

Just noticed a NFS panic on centos5 (no updates applied yet). I don't have
the serial console attached yet to get the exact stack.
However, here is the stack:

             shrink_dcache_for_umount
            generic_shutdown_super
            kill_anon_super
            nfs_kill_super
           deactivate_super
           mntput_no_expire
           do_exit
           sys_exit_group
           sys_exit_group
            syscall_call . . . EIP: shrink_dcache_for_umount_subtree


[root at xx]# uname -a
Linux xx 2.6.18-8.el5 #1 SMP Thu Mar 15 19:57:35 EDT 2007 i686 i686 i386
GNU/Linux

While I plan to install the latest update, has anyone seen this with centos5
and do you know
which update fixes this ?.

Thanks for the help,
- vnr
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