Just ran a simple test - the swf for a practically completely empty Flex 2 Application comes to ... 116K! Wow. Then again, adding components to it doesn't add all that much, since practically the whole mx framework lib must have been included already So, if going for a big application, the weight will probably amortize somewhat. But I guess there is just no such thing as "simple and light" in the world of Flex 2.
__________________ overstream.net: add subtitles to online videos (youtube, vimeo, blip.tv...).
Yeh, these figures are slightly higher than the initial overheads with Flex 1.5. To maximise value from Flex, you need to be creating fairly large scale apps, otherwise you may not be able to warrant the filesize.
I'm still very much in the mind that Flex is an enterprise-level RIA development tool, and that Flash should always be kept on-hand for smaller projects.