As per the instructions in the forum
http://forums.comodo.com/false_positivenegative_reporting_is_this_a_malware_that_cis_hasnot_detected/how_to_report_false_positives_please_read_this_before_submitting-t44473.0.html, I tried uploading the .exe file via the submit page, but it wouldn't let me. I got a box that said "please upload file size greater than zero bytes". However the file in question is 640 bytes, so I don't know why it didn't work.
From the Antivirus Logs:
Date/Time 11/12/2009 1:17:59pm
Action: Detect
Location: C:\System Volume Information\_restore{571EA56C-0B7A-492E-8F4E-77E8693C9ECE}\Fifoed\A0005538.exe
Malware name: Heur.Suspicious[at]21929188
Status: Success