On the Symfony blog Fabien Potencier has a new post talking about a change in the support structure for developers wanting to get help with either Symfony1 or Symfony2 - a split in the mailing list to help make things a bit easier to split out.

Now that Symfony2 is just around the corner, we need to better organize community support for both symfony1 and Symfony2. As more people start using Symfony2, the user mailing-list is becoming more and more difficult to follow. [...] After an opinionated discussion on the mailing-list, I've decided to create two new mailing-lists that are replacing the current users mailing-list: one for symfony1 and another one for Symfony2. The current mailing-list has been switched to the archive mode; all messages will remain browseable and searchable but new messages will be rejected.

If you're a current member of the "users" mailing list and want a similar experience, you'll need to subscribe to both. Otherwise, pick the one you like and watch your inbox fill up. This break up makes it easier for people to find messages specifically related to their version of choice without having to look for the "[Symfony2]" tag in the subject line.