Check WP 2.7-compatibility of installed plugins (#)
WordPress plugin Compatibility Notes attaches a list of supported WordPress versions to every plugin’s description on the Plugins page. This is useful if you are about to upgrade to WordPress 2.7, and need to know the compatibility of plugins you have installed.
Compatibility information comes from each plugin’s readme file. What this means(unfortunately) is that plugins which work with WordPress 2.7, but whose readme file has not been updated to say so, will be falsely identified. You may also consult the compatibility list maintained at WordPress website.