Detected Threats Blank - Threat/Infected Found

[COSMO26]

ESS 5.0.84 Current: Firefox Profile cache member in an iPhone Folder shows as Red Threat Warning Pop-up = HTML/ScrInject.B.Gen virus. File String at bottom .......................

Trend Micro's online Housecall finds Nothing;
ESS Detected Threats Log, Quarantined & Statistics Logs shows -0-
No ESS 5.0.84 Weekly Scan Tagged this until yesterday.
On-Demand Scan Log says (1) Infected / 0 Cleaned.

Believing it's a false positive I'd appreciate directions on what to do next to Prevent this being tagged in every subsequent Scan (i.e.) make the String an Exclusion?? Thanks!

C:\Documents and Settings\iPhone Acct COS\Local Settings\Application Data\Mozilla\Firefox\Profiles\22qpc708.default\Cache\A195CDCBd01 » GZIP » A195CDCBd01 - HTML/ScrInject.B.Gen virus

[Marcos]

I'd delete the file. It's a file in the Firefox cache containing a reference to a potentially malicious website.

[COSMO26]

Thanks, Marcos. I'll delete it.