OZ delete your cookies under tools, internet options, browsing history and delete cookies. You might want to run some type of spyware/adware removal software at www.download.com.
Also just to be safe run your anti virus program pal.

http://www.download.com/Ad-Aware-2008/3000-8022_4-10045910.html?cdlPid=10844457 adware removal tool just use the free version

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