Here's the scenario: You have a Silverlight 4 application with a splash screen. You business is growing and so is your Silverlight application's xap size. What can you do about it? Wouldn't it be nice if you could somehow split the xap into smaller and reusable files? This is exactly what the "Library Caching" feature is supposed to do: your reusable libraries are packaged into zip files and stored in your browser's cache, reducing the initial download bandwidth.
Theoretically all works well, of course. Until your customers start complaining about blank screens after the xap is downloaded on IE9. To get the application to start, they have to press F5 once (sometimes more). A brief internet search shows that this is a known and reported issue, but as you can see it's solved because Microsoft cannot reproduce it.
So now I have to go back and recompile the xap as a monolith to avoid this nice little feature that only "works" on IE9. How dumb is this?
