I have an Flex app running under https (hosting html page, swf, and httpservice requests) compiled with the latest nightly Gumbo SDK as a runtime RSL. Using a http sniffer (Fiddler), I see that the Flex framework is downloaded everytime the application is loaded. Worse, every module that the application loads at runtime also redownloads the Flex framework again. Are the Flex framework RSL signed in the nightly Gumbo builds? Is there an issue with https (SSL)?
I don't believe the nightly SDKs are signed, only the major beta release SDKs.
Not sure why it is redownloading the framework each time though. I don't know what the HTTPS caching rules are exactly.
If you load the Flex app over HTTP (not HTTPS) does each module still redownload Flex framework each time?
Feel free to file a bug at http://bugs.adobe.com/flex/ and somebody on the Flex SDK team can take a look.