ryanfromaustin - 4:41 am on Sep 15, 2006 (gmt 0)
I spoke to my account rep. They are testing a new feature whereby when a user performs multiple searches and does not click an ad, the ads are all moved to the right side of the page. The rationale is that the user does not want to see the ads anyway and it lessens the chance of a poor prospect clicking on an ad. If you clear your cookies, the results will go back to normal.