[Eruditus]

1. Some rogue ad caused it
2. You're possibly infected.

Solution: I suggest you use as others have said, Adblock Plus.
You can find the homepage for Adblock Plus here:
http://adblockplus.org/en/

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I would recommend you maybe upgrade here as upgraded member do not get bothered by advertisements.

Adblock Plus is a good tool for other sites which usually have pop-ups in-store though.

[Vexna]

Here is the solution of your problem. Click me.

[Pir4T]

Here is the solution of your problem. Click me.

Then, Omni should just make this site that you have to pay the l33t amount to visit this site.

[Disinformation]

I have this issue aswell. annoying as hell

[exie]

If you upgrade, you won't get any ads.

or, get adblock plugin for chrome, I believe there is one for firefox too.
https://chrome.google.com/webstore/detai...kkbiglidom

[Ace Boogie]

I posted a thread about infected ads a while ago. Back then, no one really cared about what I said. Use AdBlocker Plus to stay safe:

https://hackforums.net/showthread.php?tid=2056920

[redpois0n]

My mouse also flash sometimes. Only on hf. wierd

[Chris..]

Ive had this problem a few times, its rather annoying!

[James Kirk]

I HIGHLY doubt that this is happening anywhere else except for you, so it is most likely your end which is messing up.
Maybe you're infected. If you believe you are, visit the HJT section.

This happened to me too, its not only him.