Problem while in a browser

Anyone here had experienced while using Firefox as a browser and you're in a forum typing something when all of a sudden enterfactory opens a new tab, not just one but two tabs? I'm not sure if the system was infected with a rootkit or spyware of some sort. It happened thrice already today. I'm not sure what causes it even after looking for the addons and plugins installed in Firefox. Funny though, it doesn't happen on this forum. Also, the cursor blinks when it's pointing on the browser. Btw, I'm using the latest beta of Firefox 7.

Not sure if it got something to do with the site itself, but apparently it's some site's way of mocking lol. I'm not too sure though. I've seen it in two sites already -- isohunt.com and pspiso.com. When you're typing something trying post a message then all of a sudden two tabs would open revealing enterfactory's page (pspiso.com); and on worst cases a new page would open on the same page where I was on (isohunt.com).

i'm experiencing this problem also

i'm using firefox8..

i have no idea where did i get this problem..
enterfactory.com will open 2 new tab..
i experience this problem yesterday with my windowsxp..

i reformat my pc and use win7 64bit and still got this problem..

i think enterfactory.com might be a adware, spyware, virus, malware or etc..

anyone got an idea how to solve this? thank you..

im using desktop..i have no idea where did came from..

"Also, the cursor blinks when it's pointing on the browser" <--same as dothackjhe..

what is snip? no idea..sorry..

Enterfactory® <--it appeared just now, after i type in this forum..