Dofactory
Login to our .net design pattern forum and product download area
http://www.dofactory.com/login.aspx
Go4expert
Introduction instead of defining what is design pattern lets define what we mean by design and what we mean by pattern. according to me design is blue print or sketch of something so it can be defined
http://www.go4expert.com/forums/showthread.php?t=5127
Qt Project
Forum, wiki, faq, groups - the official qt community site. here you can get started with qt, read tutorials, find solutions to your challenges and get up to date on the latest developments.
http://qt-project.org/forums/viewthread/10215
Java Forums
Java programming forum
http://www.java-forums.org/blogs/java-tip/design-patterns
Developer
Developer
http://developer.yahoo.com/forum/Design%20Patterns
Netobjective
Netobjective
http://netobjectivesgroups.com/groupee/forums/a/frm/f/4646067991
Forums
Head first design patterns: for discussion about head first design patterns, by eric and elisabeth freeman (published november, 2004)
http://forums.oreilly.com/forum/48-head-first-design-patterns
Security
Security
http://www.opengroup.org/security/gsp.htm