Reports are that the first patch for BF2 will be out today. The updated unranked server files have already been released,

Check the EA Battlefield 2 site for the download file.

Here is the change list (thank you PlanetBattlefield for the list)

* Fixed in issue that caused the Multiplayer Browser to become unresponsive.
* Fixed an issue where some game controls were not available to be rebound within the Options menu.
* Fixed an issue with increasing performance degradation on servers.
* Fixed a problem with shader caching on client/host : after the first map in a rotation, shaders would be loaded on the fly during gameplay.
* Fixed a crash with rebinding LMB
* Fixed a problem that caused environment mapping to not appear on reflective surfaces.
* Fixed a crash that happened when a client picks up a kit that doesnt exist anymore.
* Fixed a problem with AI when the game was paused for a long time: bots would become unresponsive and also shoot more accurately.
* LOD distances tweaked on certain objects.