I doubt it's the multiple browser windows opening. I routinely have 3-4 windows open because I hate losing my place on the site. I'll often have one window as my place holder, then 2 or 3 open to my current points of interest. I may be in the gallery and have 2 windows open of pictures on that page that interested me or the main Poser forum page open with 2 windows for forum threads I'm reading. I haven't seen the bandwidth theft image yet.