for 1, 2, 4 - I'll need to troubleshoot directly, see the private message section.
for the Avast image, I Did a google search of:
avast blocked paypal "JS:Decode-BUL [Trj]"
and the first result returened is:
in this thread form the avast forums, the indicate that it is a false positive and that an update to avast will be available soon.
any time you get a virus warning from your AV software, it is always best to go to the AV software companies forums for details.