500 Error

hi,

i have installed wordpress 3.0 in my server and configure the site…..but after configuration when i try installed any plugins it’s show ” 500 Error”…here is error log:

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Installing Plugin: Google XML Sitemaps 3.2.4

Downloading install package from http://downloads.wordpress.org/plugin/google-sitemap-generator.3.2.4.zip…

Unpacking the package…

Installing the plugin…
HTTP/1.1 200 OK Date: Tue, 06 Jul 2010 15:17:04 GMT Server: Apache Expires: Wed, 11 Jan 1984 05:00:00 GMT Last-Modified: Tue, 06 Jul 2010 15:17:08 GMT Cache-Control: no-cache, must-revalidate, max-age=0 Pragma: no-cache Keep-Alive: timeout=15, max=98 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html; charset=iso-8859-1
OK
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, support@supportwebsite.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.
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Please help me….

Regards
gopalb123