pbm caused by avast?

Hi!

I have been using Avast! Pro antivirus since 1 year and a half and every was going well. I have an Acer Aspire 5715Z with Windows Vista.

Nevertheless, since few days, at each time when I start my computer there are lots of windows opening, saying that there is a problem on Acer management DMC, on Acer eNet Tray on WMIServi Appilcation or that the acces to G library has not been found … These windows open again when I try to close them and they say “it is not possible to find a solution”; I cannot reduce them neither. Nevertheless, all other applications work well. The only way I’ve found to use the computer is to wait that all these windows open (around 20 windows in 5 minutes) and then close them very very quickly as a mad!! This let them disappear for the time the computer is working but when I close it and then restart the computer the problem comes again.

I’ve heard this problem may be caused by Avast: does anyone can help me?

Thanks a lot!!

Chiara