Hey,
even if in many setups this trouble it's silent in fast environment it's really a pain. I'm talking about the slow startup of Openoffice when you want to open a file. It takes ages to do nothing, as it doesn't write or read from drive, no CPU use or whatever. It took a lot to figure out where the trouble was. From time to time it happened to do some text edit without internet connection... and surprise... no problem!