cannot remove files from /tmp

[Rolf Gerrits]

I have a problem removing files from the /tmp directory ...
At startup the system cannot remove them either

<snip>
------s-w-  1 rpm  20752 16384 Jan 15  1971 linc-160f-0-2c899751e4a49
-----ws--x  1 rpm  49661 16384 Jan  1  1970 linc-d19-0-5e596cf89dd0e
-----ws--x  1 rpm  49661 16384 Jan  1  1970 linc-d1b-0-5e596cf865a39
-----ws--x  1 rpm  49661  8192 Jan  1  1970 linc-d38-0-5fcf32a247496
-----ws--x  1 rpm  49661 16384 Jan  1  1970 
OSL_PIPE_500_SingleOfficeIPC_5c953c8cde59b25240dbf8a4df6a2ff6
------Sr--  1 rpm  16832 28672 Jan  1  1970 virtual-rolf.usyUMr
<snip>

This probably happened with the recent crashes I have with my FC4/6 
system ( or maybe they are the cause of it ? )
.... any suggestions ?

Rolf