I manage a windows 2008 server (virtual) as a web server but over the past few days it has developed a serious problem. when a browser is open and opening most web pages (but not all) the server virtually locks up; it grinds to a halt and you can't click on anything for about 5 minutes.
It's generally running slower over-all anyway even without a browser open.
It's the same whether IIS is running or not.
There's nothing obvious in the event logs.
Task manager shows very low CPU usage and applications look normal. System memory usage is about 60%
no viruses or spyware
Any suggestions anyone?