Patch 3.3.5a is a bug fix patch.

Latest patch notes can always be found: 

Bug Fixes

  • WoW can now be launched on machines with Windows XP SP3.
  • Vertical scroll bars now appear in the "Chatting with a GM" window.
  • Fixed the memory leaks occurring on certain machines.
Community content is available under CC-BY-SA unless otherwise noted.
... more about "Patch 3.3.5a"
June 29, 2010 +