Or both. Just posted on shoutbox, but maybe useful here too. I run adblocker plus noscript and ghostery - and don't have any problems.
It does sound like he has picked up some malware somewhere, so a full scan with malwarebytes or similar might solve the problem.
However, as always, I'd suggest accessing the site on IE once in a while to click on some ads to generate some revenue.
EDIT: sorry to stray offtopic, so feel free to move this elsewhere.