The latest release of Sun's integrated SAMP/LAMP stack is now available for download from here. This release supports Red Hat Enterprise Linux 5.2, and Solaris 10 U5. This is the same stack that has been integrated into OpenSolaris 2009.06. Production support is available for all platforms.
One of the nice features of this release is the integration with Update Center. This allows root/non-root installs of the LAMP/SAMP stack anywhere on the file system.