Assembla, which have been hosting some of the files referenced by earlier posts, will be removing Trac from their toolset. This means that some [older] posts here will point to missing source code, and some content is not going to be available anymore.
This should not be a big issue overall, since content in question is at least a few years old. There will be no link fixing for old posts and those interested in unavailable content can get in touch with me – I will fix specific missing files/links on request.