Where did you check this history ?
What does the avast Maintenance screen say, mine still shows 100624-0, see image, but a manual update did download 100624-1, image2.
Try a repair of avast. Add Remove programs, select 'avast! Anti-Virus,' click the Change/Remove button and scroll down to Repair, click next and follow. This has in the past resolved this out of sync issue between reported and actual VPS version.