I had browser attack launched against my laptop last night and repeated attempts on a home PC. Good reason not to have IE, but that's what the office uses - also other browser may be subject to these security problems anyway. I used taskmanager to kill IE - and then ran security software. If IE could not be stopped in taskmanager, the next step was to disconnect from internet by "ipconfig /release" in a DOS window, or a quicker way, simply pull the cable. I am still diagnosing the situation. I seem to remember having to change some browser settings on my home desktop in order to protect against such an attack. The laptop is new, so it may not be fully protected, despite the fact that it is supposed to have the appropriate security installed and activated.