Ads are not visible in IE

Ads in IE only seen by a reload of the page

[picasso]

Hi,

i have a very weired problem. I put the adesense code into my site (banner), just a plain html site with tables. Now in IE the ads are shown for ca. 1 second, then they disappear. If you reload the site, they come up again and stay. In Firefox this problem doesn't occur. Any ideas?

[Powdork]

do you have any kind of ad blocker running?

[picasso]

Don't think so. But since today the problems seems to have been vanished. But still the page impressions of adsense are only approx. 10% of the impressions told by my logs.....