现象： eclipse的preferences里面须要保存密码，保存报错
Could Not Accept Changes
The currrently displayed page contains invalid values
或者是保存后。再次打开preferences窗体，提示
The currrently displayed page contains invalid values
环境：
Windows 2008
remote windows terminal 远程桌面訪问
clipse Juno
可能有多人用一个帐号登录Windows OS。
排错：
查看eclipse日志，文件%workspace%\.metadata\.log
看到例如以下内容：
!ENTRY org.eclipse.equinox.security 4 0 2014-04-26 01:00:28.919
!MESSAGE
Secure storage was unable to retrieve the master password. If secure storage was created using a different Windows account, you‘ll have to switch back to that account. Alternatively, you can use the password recovery, or delete and re-create secure storage.
!STACK 0
org.eclipse.equinox.security.storage.StorageException: Secure storage was unable to retrieve the master password. If secure storage was created using a different Windows account, you‘ll have to switch back to that account. Alternatively, you can use the password recovery, or delete and re-create secure storage.
at org.eclipse.equinox.internal.security.win32.WinCrypto.getPassword(WinCrypto.java:62)
解决的方法：
打开eclipse preferences。选择General->Security->Secure Storage。去掉Windows Integration，保留UI Prompt。确定，关闭Preferences窗体。
注意假设多个人在这台机器启动了 eclipse，操作前请其它人退出eclipse。
不方便的地方：
eclipse在保存读取口令等敏感数据到preferences的时候。可能会提示用户设置/填写口令。
首次设置口令的时候会提示是否须要提供恢复口令的手段，能够不提供。取消就可以。
