Thread: Svhost.exe using virtual memory

I got a lot of svhost processes in task manager, and it is intake up greatly of RAM.
I have 4GB ram installed. Running windows 7 64bit. Here are SS for Task manager, processes ranked from nearly all memory consuming to least and this is some statistics for pc memory usage. it usual for computer to have about 2GB physical memory in use? Please help me to solve this problem.

It's ordinary having seven to nine svhost.exe running at equal time. Don't confused by same name svhost.exe, they are not same, each handled different task.