This is what it happens to me... I'm using avast 4.0 since 2 months or so. Got my activation key, cut and pasted it. All was OK. But 2 days ago Avast showed a error message when it was updating, it said it could not update (the program or the database, I don't remember). Now eveytime I try to run Avast (ashDisp.exe), the message tells me to update to the professional version buying it. What has happening? How can I go back to the Home version I was using before? Thanks