Rome: Total War patch v1.5
The official patch for Rome: Total War 1.5.
You need to upgrade your version of RTW to version 1.3 before you install the 1.5 patch. Includes many fixes: Fixed the memory leak slowdown issue that was seen when playing the campaign map for prolonged periods; fixed the Naval battles that were not working correctly in version 1.3; the Gauls can no longer recruit Naked Fanatics as they no longer have farming-related shrines and temples; Academy-class buildings now give a law bonus, as they do in the BI expansion pack.
A couple of other problems with saved games have also been fixed to prevent crashes.