This isn't something I've come across before in the forums (avast tray icon not appearing until after the connection).
For the record,
I had this happen to me when I was using XPpro64. I also ended up disabling my internet before shut-down, and enabling it again as needed. I was told on this forum that the precaution I was taking was not needed, but I took it anyway.
I never had the issue on XPpro32, I am no longer using XPpro64, I am currently using 7pro64 w/o this issue.
I just thought to post because DavidR hadn't seen this before... My old post is likely stashed somewhere if you think it would be of interest...
Thanx for being helpful, even if this no longer applies to me. I appreciate your efforts, and I learned a bit by following this post. *Cheers*