chuck, if this went down between my whining ... ;-)
depelopment is done and it is only a matter of time until we have the tools to give you the tools ... of course we all would love to have all in a single instance breaking the 4 GB on all platforms.
the safari issue is an issue with the used rich-text editor and as i assume the KJS engine (javascript interpreter) safari is using - the community software is not the only one having troubles with it (actually the german OSX developer blog is affected ... haha)
possibly the limitation of the KJS call stack to 100 entries is the reason but we have already set up a new test system to investigate with different editors and/or settings - there is a lot of AJAX involved so i ask you for patience ... the guys developing tinyMCE are also working on a possible solution.
the workaround (for paragraphs in a post and other formatting options) would indeed be to use firefox on the mac for the moment
christian