Hello, I installed Avast free edition 4.5 on my computer. One of the last updates upgraded it to 4.6 but when I start windows XP the message center tells me to update “Avast 4.5” because it’s an old version. How can i make him recognize my updated version of Avast ? Is there any other way than reinstall ?
What exact version of Avast do you have now?
It looks like this: 4.6.xxx
Same observation ACER Notebook, running WIN XP home, SP2, hotfixed:
Avast in spit eof update to 4.6.603 still shows as 4.5.603 in WIN security center, so what…
An old bug :(: http://forum.avast.com/index.php?topic=11300.0
But it is fixed in version 4.6.612 
Hello
After an automatic update the problem seems to be fixed. Thanks for helping me. 
Question : is version 4.6.612 avalaible or to come ? When I update AVAST it says me i’ve got the last version 4.6.603…
It’s available as beta version.
In fact, we’re now at 4.6.614
http://forum.avast.com/index.php?topic=11828.0
You could update safely. Very stable version.
Thanks for that all ! I just upgraded my avast to 4.6-623 and there is no more problems… for me 
;D Iwish all of you a nice day.