Well Flash Player is a huge target, but I rather doubt it has that many updates so close together.
There are two flash player versions, that for IE and is the activeX one and the other plugin version for other browsers, firefox, etc.
You don't say what browser/s you are using ?
What avast version are you using ?
I suspect it is avast 8 as the software updater in avast 9.0 is simplified and doesn't actually display the version numbers now.
Have you tried using the Refresh/Reset function in the software updater ?