You can download and trial the beta 2 release of AdobeAIR 3.2 Beta 2 using the following link
http://labs.adobe.com/downloads/air3-2.html
This beta release of Adobe AIR introduces multi-threaded video decoding and Mouse lock, relative mouse coordinates, along with right/middle click events
You can download and trial the beta release of Adobe Flash Player 11.2 using the following link
http://labs.adobe.com/downloads/flashplayer11-2.html
This beta release introduces multi-threaded video decoding and Flash Player background updates
Microsoft .NET Framework 4.0.3 Beta Runtime Update can now be obtained.
New features introduced in this update
You will also find multiple fixes introduced in this Beta Runtime Update, KB 2599651 lists the new features and fixes in more detail and also provides a download link for this new update.
The computer may stop responding or respond very slowly when the .Net Framework 4 Optimization Service (Mscorsvw.exe) starts. This issue effects the following operating systems: Windows XP SP3, Windows Server 2003, SBS 2003, Windows Vista SP2, Windows Server 2008 SP2, SBS 2008 SP2, Windows 7 SP1, Windows Server 2008 R2 SP1 and SBS 2011 SP1.
The issue occurs because the process sets its service configuration incorrectly.
A hotfix is available but must be requested from Microsoft using KB 2571181 http://support.microsoft.com/kb/2571181
Alternatively you can immediately download the hotfix from “thehotfixshare” website
Windows x86
http://thehotfixshare.net/board/index.php?showtopic=16259&hl=2571181
Windows x64
http://thehotfixshare.net/board/index.php?showtopic=16258&hl=2571181