Well, since I know for a fact that the composer does not work in Safari, I would test a different browser. As it happens, I had the same problem and "brilliantly" solved it by opening the same page in Chrome. Since I've been developing web pages as a hobby for a few years (AddMii being my most recent effort), I have 3 browsers installed. Of course, being an Apple Guru (geniuses suck) I sync everything in Safari, but I like to be able to try stubborn pages in different browsers.
Chrome has its own flash interpreter, if I'm not mistaken, but installing Adobe Flash might help. Usually, if the system is recent (post 10.7) flash does not come installed by default, but the browser should suggest to install it as soon as it is required. Of course we don't know much about the computer in question, and we presume it has an Intel processor, but popular wisdom says that "assume makes an ass of you and me" (ASS+U+ME). We might be talking about a G4, no chance to install anything but an old version of Firefox there.
For users with limited access to Windows application (office suites, databases), I usually suggest an emulator. There are 3 choices available: Virtualbox (free); Vmware Fusion and Parallels Desktop (both commercial). Again, if you embark in installing windows, you need a legal licence.
If you want to play games and access the most IE-centric websites, Crossover is a good option, but it does not guarantee to run 100% of windows software.
Bootcamp is usually the best option for serious players, architects and CAD users in general (even though AutoCAD, Archicad and Vectorworks are available for MacOS).
How does this sound, professional enough?
Sorry, I've got to visit a friend's town now! See ya
I agree with most of what you've said, but you've just long-windedly said exactly what I've said; Safari (and other browsers) require Third Party Plugins for flash etc.
i.e. any Flash or Java updates (being Java 7) that have recently changed in OS X Mountain Lion/Safari, now need a non-default Java Virtual Machine. It has nothing to do with the processor :/
Secondly, there's no talk here of a single machine having this issue. I had the same issue originally, as well as a bunch of others here. I, myself had the issue in all three browsers (hence why I just boot-camped Win7 as it was the easiest thing for me at the time). I can close OSX and Boot Win7 in 30 seconds.
Emulators are the worse thing to use for running any type of OS.
How can you slate boot-camp in favour of an emulator or virtual environment?
Emulators waste memory, hold up threads, and require twice as much processing power. Not to mention forces your machine to run two Operating Systems unnecessarily at the same time...
I do agree with you on Crossover though, but if anyone were a serious gamer, I doubt they'd be playing games via a Macbook. If they were, they'd clearly boot-camp it to save processing power which is obviously needed for the higher-class/top-end games, PC gamers, are most likely to be playing.
Boot-camp is really only used for Software not available for MacOSX, such as Visual Studio or older versions of Maya and 3DS Max or as a testing environment for cross-platform programs.
I personally use Photoshop, Illustrator, Dreamweaver, AutoCAD, AfterEffects XCode, Netbeans and Microsoft Office on my Mac now... I'd never waste my time booting into windows just to use a graphics package or universal IDE...
What do you use to develop your webpages in terms of language/database queries?
Your site is impressive.