Avast is reporting http://www.jqueryc.com/ as being infected with malware. If you have a Free theme or plugin which is showing this error do the following.
Using Total Commander on windows or grep in Linux search your theme folder for "http://www.jqueryc.com/"
Mine was located in a rogue post.php file within my template. This post.php file was included from my themes functions.php. Compared with a clean version I simply removed the include entry in functions.php and deleted post.php which was located in a deep folder within the theme.
It's probably not the same for everyone so the best thing to do is search using grep, or total commander for the string "jqueryc" or similar to find which file is calling that malware, then search for the name of the file which contained the rogue URL, and determine how it's being called in your theme or plugin to clean/fix it.
Guys? Your sites are hacked. I'm sorry, but they really are.
The problem is that www.jqueryc.com is 100% no way the legitimate site for JQuery.
http://en.wikipedia.org/wiki/JQuery
That's something that [ self-moderation here ] Really Bad People™ insert into themes and plugins from the Internet. JQuery has become a cornerstone of many websites on the Internet so they use host names like that to trick you into beliving that that is a legitimate site. It's not and your sites are compromised.
Instead of treating this symptom you need to delouse you WordPress installations.
You need to start working your way through these resources:
http://codex.wordpress.org/FAQ_My_site_was_hacked
http://wordpress.org/support/topic/268083#post-1065779
http://smackdown.blogsblogsblogs.com/2008/06/24/how-to-completely-clean-your-hacked-wordpress-installation/
http://ottopress.com/2009/hacked-wordpress-backdoors/
Additional Resources:
http://sitecheck.sucuri.net/scanner/
http://www.unmaskparasites.com/
http://blog.sucuri.net/2012/03/wordpress-understanding-its-true-vulnerability.html
http://codex.wordpress.org/Hardening_WordPress
http://www.studiopress.com/tips/wordpress-site-security.htm
mustafaokumus adlı üyeden alıntı
Aynı sorunu ben de http://cebimdekikelimeler.com sitemde yaşamaktayım. Bir çözüm bulan olursa paylaşırsa sevinirim. Yabancı kaynaklarda genel olarak seo eklentileri üzerinde yoğunlaşılmış ancak ben onu denedim çare olmadı.