Problems after using Combofix

i read a post on Removing Trojan Win32-Clicker.delf.cbe on which a solution was posted by "Shelf Life" . As per the posting i downloaded MBAM & Combofix. After running MBAM , i could get rid of a few virus but a few remained even after restarting the machine. Hence , i took the next step of using combofix. After sucessfully running combofix , all the virus were removed ( even now MBAM does not show any virus ) The problem now is that my internet connection has become quite erratic. Most of the times , it shows "Internet Connection Error" , then i click refresh a couple of times and i the page pops up. Same is the case with outlook - non responsive but then after a couple of send / receive clicks it just kick starts and gets all the mail. One consistent flaw which i have noticed is that there is no response to "Ping yahoo.com" , irrespective of internet connection working or not. Kindly advise if there are some settings to be tweaked .. i tried to lower the security settings but does not seem to work.

Unfortunately you take a chance when you follow instructions that were not specifically aimed at your PC and its problems, and things don't always turn out as you expect. Take a read through this and then start a fresh thread in this forum and post a HJT log, and a brief description of your problem, and somebody will be along as soon as.
Helpers look for posts with zero replies which is why you need to start afresh and why i'll lock this one.