Hi,

  • the last 3 are “false positives” in PANDA-AV-files, for details see above Link or avast FAQ’s

  • SWEN was caught in your Browser-Cache ? rather weird…
    are you maybe subscribed for newsgroups ?

Read some info on SWEN:
http://www.avast.com/eng/viruses/windows_viruses/win32swen.html
http://vil.nai.com/vil/content/v_100662.htm
TrendMicro

you can just leave the files in the chest (they are harmless there), or delete them,. if your PC & browser run OK after a couple of reboots…

do a full thorough scan with avast (archive-scanning enabled!)

Make sure that you have all Windowsupdates applied !! :wink: