Kmail crashes when /home is nfs-mounted

I've got a dual-boot (SuSE 7.3, NetBSD 1.6) nfs server (loke). On my nfs-client(oden, SuSE 8.0) loke:/home is mounted on /home. loke:/home is an ext2fs-partition. oden runs fam. Regardless of operating system on loke kmail oden always crashes when I try to send mails. This never happens on loke. Clues, solutions? -- God made the integers; all else is the work of Man. -- Kronecker