Here's the thing. The bug I have with it, I'm reasonably sure, is related to my version of flash rather than any bug with WordPress.
Now, given, I'm on Ubuntu, and I know that's not a huge share of the platforms/browsers out there. But if you check the Ubuntu forums for problems with flash (especially if you're running the 64-bit version), you see that the supported flash package is usually a little behind the newest linux version, but it doesn't always matter. Fixing flash for us just isn't as high a priority for them, which is fine.
But it does raise an issue, namely: why doesn't WP have an option, perhaps next to the one that shuts off the annoying wysiwig editor (why, yes, I gots 'pinions, heh), that allows you to just shut off the flash uploader if you don't want it? Why does this require a 4 line plugin?
Thanks for listening, cheers, and keep up the great work everyone :)