I recently re-installed Windows XP on my system, as I do periodicaly when the system becomes slow. I have virus software installed and also have a pop up blocker on the system. With anoying regularity two things happen when I'm on line. A window appears in the middle of the screen offering me access to an adult site. This window cannot be ignored as if I select no, use the close button or even if do nothing another window opens filling the whole screen. The whole area is white with no detail or close button. My quick fix at this piont is to CTL-ALT-DEL and force the sut down of this window in task manager. The other thing that happens is that my network connection will be abruptly shut down, At this point I am unable to redial (port already in use). There is no connection in this state however I notice a new icon in the task bar called "1on1", a new icon on the desktop with the same name and a file in the WINNT directory called "1on1.exe". To fix this I close the icon in the task bar and delete both the icon on the desktop and the file in the WINNT directory. I've never experienced this problem with such severity or frequency before. The fixes I use are all very well and everything is working again until it happens again. Simple things like picking up mail have become more like an assult corse. Pleas, has anyone experienced this kind of thing and perhaps knows how to stop it.
As Bapou said you need a better firewall at the moment XP's, it will change with SP2 later on this year, only blocks incoming and you will not know about anything trying to dial out. I use zone alarm free but others recomend other free ones.
I'd suggest you also ask your phone co to set up premium rate blocking on your phone line.then even if one installs itself it can't dial out and your connection drops but at least it won't cost you anything. Mike.