PCSX2 SVN r3548 is released. PCSX2 is an open source PlayStation 2 (PS2) emulator for the Microsoft Windows and Linux operating systems. With the most recent versions, many PS2 games are playable (although speed limitations have made play-to-completion tests for many games impractical), and several games are claimed to have full functionality.

PCSX2 SVN Changelog:
r3546
wxWidgets/Win32:
* Fixed a bug that caused all but the first stackframe walk to fail with an error.
* Improved thread safety of stack walking.

DevNotes: When walking stackframes multiple times from the same process, only the first stackframe walk would work and all others would fail with an error because of calling SymInitialize multiple times. So now SymInitialize is only called once and SymRefreshModuleList is used prior to walking, if available. (only available in winDbgHlp.dll v6.5 or later)
r3548
microVU: Added some const qualifiers to the instruction/opcode function LUTs

Download: PCSX2 SVN r3548
Download: Official Beta Plugins Pack [11 March 2010]
Source:Here