Seems you have malware
malware - Leetutor list
Have you tried running virus scans and spyware scans This could be a problem with viruses/trojans/spyware or other malware. Some free online virus scanners:
http://housecall.antivirus.com http://www.pcpitstop.com/antivirus/default.asphttp://www.pandasoftware.com/activescan/com/activescan_principal.htmAlso try these free programs to rid your system of spyware, trojans, and other malware:
http://download.com.com/3000-2144-10194058.html?tag=lst-0-1Spybot - Search & Destroy
http://download.com.com/3000-2094-10045910.html?legacy=cnetLavaSoft Ad-aware
I use BOTH of the above programs on my 3 Windows systems; what one program misses, the other catches. Also make sure to download the most up-to-date data before you run the programs.
Another very good freeware program for ridding yourself of spyware is this:
http://www.superantispyware.com/SuperAntiSpyware
You might also try this free program (HijackThis) -- install it in its own folder, don't download to your Desktop:
http://www.spychecker.com/download/download_hijackthis.htmlHijackThis is a tool that is for advanced users, because it lists all the installed browser add-on and startup items, allowing you to inspect them and then optionally remove any ones you select. You must be careful in choosing what to remove, although the program can create a backup of your original settings. But put a check mark to fix any home page or search page setting that HijackThis detects which you have not entered yourself. The program has an option to download online updates of the hijack data.
You should first post the log at this site:
http://www.hijackthis.de/index.php?langselect=englishand it will be automatically analyzed for you (after you click on the button labeled "Analyze" near the bottom of the page), telling you which entries (called "Nasty") should be fixed. You will also be told if you have any items that are "Possibly Nasty", or "Unnecessary", or "Unknown". If you don't know what to do about these, you might find something on the module name by doing a Google search of the internet.
If you have any questions about what it is asking you to fix that you would like the E-E experts to comment on, then do this: right above the Analyze button you will see this message: "The following analyses has been stored temporarily", and there will be a link where the analysis file will be saved (for a period of three days). Click on it and then copy the link of that page from the address bar of your browser and paste it here, and experts can check it for you. (Please DON'T post the entire log itself in your question.)
In case you would like to learn more yourself how to use HijackThis, here are a couple of urls:
http://www.tomcoyote.org/hjt/HijackThis Quick Start
http://www.spywareinfo.com/~merijn/htlogtutorial.htmlHijackThis log tutorial
I hope this helps !