Visual Studio 2010 goes very slow during and after "Find in Files" search option

Can anybody help me on this. I have been working on the same machine for last six months with Visual Studio 2010 as my development tool with no issue. However for last few days I have been facing trouble when I search any word using "Find in Files" option in Entire Solution or In Current Project. At first place it does take normal time in searching, but as soon as it finished the search, my visual studio IDE goes dead slow, and subsequently it takes a 2, 3 seconds for even cursor up and down on the editor. Before search the CPU Usage is in Task Manager is as normal as 2 - 5 percent but after search it start using CPU at 25 to 30 percent and VS 2010 goes dead slow. Surprisingly if I leave VS 2010 idle for around 20-30 minutes it comes to normal response and CPU USAGE on task manager again shows normal usage like 2-5 percent and everything is fine. As a work around I did the following 1- Deleted all temp files 2- Deleted all ASP.Net Temporary Files 3- Cleared all TFS Cache. 4- Even uninstalled and re-installed complete VS 2010 None of the above worked.