The MTASA team have just released the latest update to their multiplayer mod for San Andreas. Version 1.3, which has been in the RC stage for the last 2 weeks, has now become stable and brings the following improvements and fixes with it:

• fixes for various network problems which occured in 1.1 and 1.2 series (including a fix for "Map download breaking often on large transfers" issue)
  
• added new scripting functions for removal of default GTASA map objects (including breakable ones)
  
• introduced a new scripting event - onClientVehicleCollision
  
• implemented a new scripting function - takePlayerScreenShot
  
• fixes for various crashes and issues (including "warp glitch", inaccurate heat seekers sync, createProjectile() velocity desync between clients, custom models texture crash, "white models" when using custom models and more)
  
• added functionality to protect client-side scripts which pre-compiles them before being sent and stops resources from being saved on disk. This is configurable in the resource's meta.xml.
  
• added pixel manipulation functionality
  
• introduced new client-side scripting functions - getBirdsEnabled
  
• included a new gui skin - Lighter black - contributed by Aibo
  

We've added a mirror of the download here on TGTAP. Relevant links below:

Download MTASA 1.3 - Announcement Topic - Official site