Had the same issue today with Time Matters 10.0 file tmckzip.dll. Uploaded to VirusTotal:

SHA256: 1a748a870e05e13d50131db239f43e1dbddb98f0891c0e3bff6f8333ba4cd426
SHA1: 85a5143dbaaecd05b45149374d6b8c12d3be365c
MD5: 8243dd8016536cf21ed4e0fb68082a7a
File size: 1.1 MB ( 1193280 bytes )
File name: 8672A952401A2E65351112A32F9A5400851ABB6B.dll
File type: unknown
Tags: signed
Detection ratio: 0 / 42
Analysis date: 2010-07-22 15:42:47 UTC ( 2 years, 9 months ago )

Interesting that avast! does NOT detect it @ VirusTotal.com. Also, this is version 4 at this client, and yesterdays VPS update caused the issue (wait, 4.8 is no longer updated as of March 31st, 2013) I think that 4.8 IS updating!