Eclipse hangs intermittently on PC without internet connection

I've encountered this problem since Eclipse 3.2, but in the newer versi开发者_JS百科ons the problem occurs more often.

The eclipse IDE will be unresponsive for a few seconds (up to a minute?) whenever I access certain configuration menu items or when eclipse parses an XML file which contains xmlns variables pointing to some internet URL. (eg; xmlns:rich=http://richfaces.org/rich" )

Does anyone know how to set Eclipse to operate in "offline" mode? Or to cache the internet item locally?

The correct way is to specify your own local copies of the referenced schema files. Under the Preferences, XML → XML Catalog, select User Specified Entries and click Add. Then you can add your own entry there, which could refer to a local file or even a file in your workspace.