LKM Trojan installed

[Rivanor P. Soares]

While running 'chkrootkit' at my box (RH 7.3) I saw the following:

Checking `lkm'... You have    69 process hidden for ps command
Warning: Possible LKM Trojan installed

Could this be *true* ? How can I discover it?

Cheers...

Rivanor.