I don't know if anyone can advise about this one. We have written and implemented a LOB Silverlight 3 application - which we are currently testing at a clients site.
We have come across the problem, where on a few of the machines on site the browsers crash randomly. The machines run Windows XP SP3 - the browser is Firefox.
We suspect that it may be because these machines browser's seems to be unreliable as they had some plugins installed etc. and a suggested solution was to implement the application in the out of browser mode.
What I want to know is, when a Silverlight 3 Application is running out of browser, is it still relying on a specific browser in the background... or would this solve our problem if the browser is "unstable" because of plugins?
No. There is no connection between a Silverlight OOB application and the browser in which it was running when installed. Once running as an OOB application Silverlight uses its own ClientHTTP stack and no longer depends on the Browser HTTP stack.
Assuming the instability is a result of Firefox extensions then running the app in OOB may help. Bear in mind though, that the browser's HTTP stack is likely to be more efficient and you loose automatic cookie handling.