i tried again this morning, and it was able to scan in regular mode. here's the exact log:
GMER 1.0.11.11384 -
http://www.gmer.net
Rootkit 2006-09-27 10:50:35
Windows 5.1.2600 Service Pack 2
---- System - GMER 1.0.11 ----
SYSENTER ? EEC53E91
---- Modules - GMER 1.0.11 ----
Module (noname) (*** hidden *** ) EEC4F000
---- Threads - GMER 1.0.11 ----
Thread 4:1096 EEC51F6C
---- Services - GMER 1.0.11 ----
Service C:\WINDOWS\system32\lzx32.sys (*** hidden *** ) [SYSTEM] pe386 <-- ROOTKIT !!!
---- Files - GMER 1.0.11 ----
ADS C:\WINDOWS\system32:lzx32.sys
File C:\WINDOWS\system32\lzx32.sys <-- ROOTKIT !!!
---- EOF - GMER 1.0.11 ----