Some peoples may encounter this problem during the usage of Visual Web Developer. According to some expert opinions it waits for some Remote Procedure Call to Complete. But nobody could say which one. In my experience I noticed, it related with Internet Information Services. To VWD to get back to normal running do the following steps.
Open the Task manager. Close the inetinfo.exe process. Then wait a moment the VWD will start responding. To rectify the problem completely, try uninstall the IIS and reinstall. If the problem not solved when you stop the inetinfo.exe process try uninstall and reinstall IE 7.