So, I have used the Virus Chest method to get the file to Avast.
I'm sorry to seem to be criticising but:
1) In my view, there should be a button/link directly to the Virus Chest - it's an important part of the software, yet it is hidden away under the label 'statistics\component status'.
2)If the User has made an effort to submit a file to the lab, it's because they believe the file is suspicious. It should upload to the labs immediately, not wait until the next Avast update - too much time lost, other Users could be hit in the meantime.