After deleting two folders on a SLES 10SP3/OES2sp2 NSS volume the server crashes and disconnects all drive-mappings of every logged-in user.

In var/log/messages I'll find:
May 9 15:53:03 P1 kernel: ndsd[13929]: segfault at 0000000000000121 rip 00002aaaaab0174d rsp 000000004c56ff60 error 4
and two days before by another colleague deleting files:
May 11 12:01:24 P1 kernel: ndsd[24169]: segfault at 0000000000000121 rip 00002aaaaab0174d rsp 0000000041c0af60 error 4

After server reboot the users can login and the mappings will work again.

What is going wrong?

Holger