I've been using the latest off the bzr, updating every couple of weeks or so.  The issue has been around for quite a while.  In fact, I'd've sworn I'd seen something about it in the mailing list at some point, but I couldn't find anything when I searched my gmail for something on it.



2013/2/27 David Engster <deng@randomsample.de>
Nate Schley writes:
> While I'm coding in various buffers, sometimes semantic/cedet wants to delete
> some buffer(s) I'm not immediately using.  The clue:  A pop-up window saying
> words to the effect of 
>    "foo.cpp has been modified.  Do you really want to kill it"

Which CEDET version are you using?