ads not showen..

google ads arent showing on my website any1 knows what going on?

[voorma]

HI, i got google adsense for 4 days now,
but my ads arent showing up.
does any1 know whats going on?

[CGameProgrammer]

A recent change to AdSense now, by default, hides ads if Google hasn't indexed the URL yet and there's already a public-service ad being displayed.

Wait for Google to index the site. Also keep in mind that ads are shown specifically for that URL, so "page.php?a=3&b=5" shows different ads than "page.php". When you have alot of parameters, such as a message board, it's likely many URLs won't get indexed.