I run Flex Builder 3 on a mac and as my project grows - the compile time gets longer and longer and longer. I am using some SWC\'s and there is a fair amount of code but it
The SDK 4.x.x introduced silly bug (see Adobe bugsystem, issue FB-27440), which causes projects with SVN or CVS meta data compile much slower than with SDK 3.x.x. On how it can be fixed, see here.