Hello i am using Avast Home. Sometimes there a no VPS Updates for 2-3 Days is this normally? I have read that a good Antivirus Product (freeware or free to use products too) must have minimum once per Day VPS (Virus definition updates). Everything wrong?
avast doesn’t have a fixed schedule and when there are updates they are released straight away. On average there are 4 updates a week, though I have had sometimes 4 in a day.
You can check the VPS History and I think you will find there have been updates in the last 2-3 days. avast! VPS Updates History
# 23.2.2007 - 0716-323.2.2007 - 0716-2
22.2.2007 - 0716-1
22.2.2007 - 0716-0
So none on the 24th, but 2 updates on the 23rd and 22nd.
A good AV must primarily detect and not work to a false schedule and for the last 3 years (almost) that is what avast has done for me and many other happy avast users.
If they haven’t anything to add, they can’t send out a vps-update 
But for me, avast! is fast enough with the updates, and what David said, sometimes we doesn’t get a update for a day, but sometimes it is two updates a day.
I am very happy with avast!, it work just fine here, and it is so much more I look up in a antivirus-program, then just “it must minimum have updates every day”.
Yes i am very happy too with Avast. It was only a question why other products have sometimes a day all 15 minutes updates or every hour and Avast only onece per day or two.
It would be quite easy to trickle feed updates releasing one or two signatures every 30-60 minutes, that might make you feel good but it doesn’t achieve anything. It would look like avast is doing lots of updates, avast checks for updates when you connect and every 4 hours if you remain connected if one is available you will get it.
I can’t speak for other companies (nor avast, I’m just a happy avast user) as to why they do this or how they achieve it if they make a big deal about it then marketing is likely to be a factor and if marketing gets involved in the equation then trickle feeds would make it look better. Not that I’m saying that is what reputable companies do, perhaps I’m too much of a sceptic ;D