I am currently working on a very large enterprise flex application. The current code base is being built in Flex Builder 3 with the flex 3.4 SDK. When the newest version of flash player was released we noticed that our application would take a much longer time to load or some users were unable to load the application at all. This has been tested both in firefox and IE with the same outcome. Seems like on newer machines which are more powerful the application will load only after a long period of time and on older machines the browser would just crash.
I have tried building with Flex Builder 3 and the 3.5 SDK however that still produces the same result. I am going to try building with Flash Builder and 4.1 SDK mx only.
Has anyone run into an issue like this? Does anyone have any other solutions I can try?
EDIT: The application runs fine on 10.1.53.64 but on version 10.1.102.64 I have the slow loading issue as stated above.
Thanks
We run into similar problem in our project. While loading by itself isn't a problem in our case, instantiation of visual components takes much longer under SDK 4, 3-4 times.
It means that if your components get created all (or many) at once your Flash Player will be spending 3-4 more time initializing, and may eventually exceed timeout limit (which is indeed about a minute, not 15 sec).
You app my need a redesing, to split initialization into steps, reuse components, etc.
Here are some simple performance samples for MX and Spark to try: http://forums.adobe.com/thread/786472?tstart=30