When you're browsing, its normal. Use Firefox - less pop-ups. I highly doubt that you have the first OSX virus, which would be if you get pop-ups without apps open.
When you're browsing, its normal. Use Firefox - less pop-ups. I highly doubt that you have the first OSX virus, which would be if you get pop-ups without apps open.
In addition to that, make sure that, if you have Flash installed, you have version 9. Version 9 somewhat reduced Flash's complicity in tricky ways of initiating pop-ups that fool pop-up blockers.