Is this bookmarked sites an clicking on the bookmark takes you to another bookmarked site? If that is the case then a likely cause is a problem with the file that stores bookmarks. For details on fixing that see http://kb.mozillazine.org/Locked_or_damaged_places.sqlite
If it is clicking on a link from a search engine that is taking you to a random site, this type of behaviour can be caused by malware. Try running several malware scanners. It is best to run several as each will pick up things that the others miss. Some scanners you can try are:
If the above malware scanners do not find any malware or can not clear it, you should consider posting in one of these forums for specialized malware removal help:
Is this bookmarked sites an clicking on the bookmark takes you to another bookmarked site? If that is the case then a likely cause is a problem with the file that stores bookmarks. For details on fixing that see http://kb.mozillazine.org/Locked_or_damaged_places.sqlite
If it is clicking on a link from a search engine that is taking you to a random site, this type of behaviour can be caused by malware. Try running several malware scanners. It is best to run several as each will pick up things that the others miss. Some scanners you can try are:
* [http://www.malwarebytes.org/mbam.php Malwarebytes]
* [http://www.superantispyware.com/ SUPERAntiSpyware]
* [http://www.lavasoft.com/products/ad_aware_free.php Ad-Aware]
* [http://www.microsoft.com/windows/products/winfamily/defender/default.mspx Windows Defender]
* [http://www.safer-networking.org/en/home/index.html Spybot S&D]
If the above malware scanners do not find any malware or can not clear it, you should consider posting in one of these forums for specialized malware removal help:
* http://forums.spybot.info/
* http://www.spywarewarrior.com/index.php
* http://forum.aumha.org/
* http://www.bleepingcomputer.com/forums/
* http://www.spywareinfoforum.com/
