TYPO3 Core

There exists a race-condition in the EM while updating the extension list.

If the update takes more than 30 seconds, Ext.Direct reaches its Ajax timeout and sends the Ajax request (to update the list) again. As the EM updates the extensions.xml.gz file at the beginning of the update process, the second request immediately sees that the repository is already up-to-date and respons this status to the client.

Thus, the user gets a "Repository is already up-to-date" message shown, although it was not.

There has been already also a thread in typo3-german list.