使用eclipse安装GWT出现这样的提示
An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at http://dl.google.com/eclipse/plugin/3.6/plugins/com.google.appengine.eclipse.sdkbundle.1.4.2_1.4.2.v201102111811.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/plugin/3.6/plugins/com.google.gwt.eclipse.sdkbundle.2.2.0_2.2.0.v201102111811.jar.
Read timed out
 到底是哪里出了问题啊 急！！！

------解决方案--------------------
你可以到 help -about eclipse 看看版本信息
另外的安装方法就是 下载安装包
离线安装
http://code.google.com/eclipse/docs/install-from-zip.html
这个网站里选择对应的版本然后看看安装方法