With version 10, Solaris provides a solid platform for Open Source applications, by providing a load of precompiled and preinstalled tools and libraries in /usr/sfw ; still, sometimes you want to use your own compiled version. For example, I think everybody should use their own compiled OpenSSL instead of pre-fabricated binaries. But trying to compile OpenSSL can sometimes make you go mad...

Drupal supports OpenID as a means for users to logon. This support is implemented in an optional OpenID module that the administrator of a Drupal site can check to install. While the OpenID protocol seems pretty simple, there are quite some functions to offer to actually support OpenID in every way that should be possible. One of these often features that can quite easily be overlooked, is RP Discovery. Most people find out about RP Discovery when trying to use OpenID with Yahoo, because of Yahoo mentions that a website is untrusted when it could not verify the RP.