We used Trac (edgewall software) and subversion at the last place and I am now introducing it at the new place... There are also the usual formal plan / design / test documents that get checked in to subversion (or possibly the LiveLink system, I'm still working on that one). But most planning, note recording and discussions should get recorded through trac tickets or the wiki and setting up new environments is quick and easy. All nice'n'liteweight

"Quite a bit of interest"? Oh, come on now, they only achieved that because it is being pushed out by windoze update. If it was left to peeps to download the numbers would be a lot lower... I bet most users do not even know they have it. And we complained when Apple pushed Safari on us with iTunes... If you do not "want" SL, turn off auto-updates (helps to avoid those annoying forced reboots) and always use the 'custom' option to select what you do (not) want. Personally I love the "never show me this again" checkbox.