LKM Trojan

[david walcroft]

Hi,
    yesterday chkrootkit logged this

Checking `lkm'...
 You have     2 process hidden for readdir command
You have     2 process hidden for ps command
Warning: Possible LKM Trojan installed

Today it logs

Checking `lkm'...
You have     4 process hidden for readdir command
You have     4 process hidden for ps command
Warning: Possible LKM Trojan installed

Would these be a 'false positive' or for real and if so how do I
confirm and remove any infected process/trojan

  Thanks   david