It looks like we need another option. The same thing happened. GMER appears to have run successfully, and promptly rebooted the system when it appeared to be done. (I was watching, and it really looked like it went through everything.) I did a windows search for ark.txt in case there was a log written to some random place on the harddrive, but no dice. No log to be found anyway.
No alerts about rootkit activity at any point while it ran.
Should I run defogger to enable those drivers I disabled earlier?