Vikas B wrote:
I do have adwaremedic installed and used it to clean. it is not able to detect this and says there is no adware installed ?
That means that either your problem isn't due to adware, or it's brand new adware. For further steps to take, see:
http://www.adwaremedic.com/kb/unsolved.php
Note that using the older TSMART tool will not detect anything AdwareMedic doesn't, nor will Apple's instructions help you remove anything that AdwareMedic doesn't already detect. Both are far more limited.
(Fair disclosure: I may receive compensation from links to my sites, TheSafeMac.com and AdwareMedic.com.)