好不容易组织一篇帖子，近来经常遇到不能发出的情况，弹出窗口出现如下提示：
Server Error in '/' Application.
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The resource cannot be found.
Des cription: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

Requested URL: /club/bbsbbs.aspx


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Version Information: Microsoft .NET Framework Version:2.0.50727.3623; ASP.NET Version:2.0.50727.3618
不知各位遇到过没有？是怎么回事？