Clicking a link in a search engine takes me to porn?

I have IE7 running on XP. We’ve found a problem that we cant seem to fix.

Whenever we search for something on the internet via a search engine (Google or altavista) it come up with the relevant search results. We typed in myspace and it came up with the official link (http://www.myspace.com). When you click on it, it scoots off to porn or some other undesirable website other than myspace. The same happens for friendfinder and even my own website that sells t-shirts.

Ive been using the net for 10 years now so i know what im doing, but this has me baffled! Antivirus and spyware checks reveal nothing. deleting addons that arent necessary dont help either and erasing unused programs produces the sam result.

Any ideas?
For the benefit of Ben and Jorge….re-read the question! Ive done spyware and virus scans and they came back clean. Im not that stupid that i wouldnt do them first. Oh and Ben, think before you speak eh?

Firstly update and run your anti-virus product. You can also run a free online scan as well as some malware can actually corrupt or disable your resident security products. Here are a few online scans you can run:
Trend – http://housecall.trendmicro.com/
Panda – http://www.pandasoftware.com/products/ActiveScan.htm
Norton – http://security.symantec.com/sscv6/default.asp?langid=ie&venid=sym

Second download, update and run scans using the following products:
SuperAntispyware

http://superantispyware.com/

Spybot S&D (free version requires manual updating)

http://www.safer-networking.org/en/download/

AVG AntiSpyware

http://free.grisoft.com/doc/20/lng/us/tpl/v5

Adaware from Lavasoft (free version requires automatic updating)

http://www.lavasoftusa.com/products/ad-aware_se_personal.php

(These programs can be run in Safe Mode after downloading and updating)

Third, after cleaning your system, disable System Restore, reboot and re-enable System Restore when you log back on. This will clear the malware that may still be lurking in System Restore, which could be reinstalled should you need to rollback at some point. Additionally, a reboot may be required to complete the malware removal process.

Lastly, you may also want to install the following tool. It is free and requires you to check for and enable updates manually once a week or so. It uses no system resources.
SpywareBlaster (inoculates, not a spyware removal tool)

http://www.javacoolsoftware.com/spywareblaster.html

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If you cannot get it removed after the above, you may want to join a tech group that specializes in providing manual instructions on malware eradication.

Free technical help forums

AumHa Forums

http://aumha.net/index.php

Bleeping Computers

http://www.bleepingcomputer.com/forums/

Spybot S&D Forums

http://forums.spybot.info/

Lavasoft Forums

http://www.lavasoftsupport.com/

Spyware Info Forums

http://forums.spywareinfo.com/index.php?showtopic=79038

GeekstoGo

http://www.geekstogo.com/forum/forums.html

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