We've had people report that one container fails due to too many lines of code ending up in a single try/catch block in the generated servlet while other containers run the same JSP without a problem.
Personally, I would be more concerned with the amount of code that can be easily maintained in a single JSP. This number, for me, would be much lower than the upper limit for any container out there. [ November 10, 2008: Message edited by: Ben Souther ]
I don't think the question is well-posed as it is. I can think of several definitions of "maximum JSP file size"; without knowing which one is meant various answers are possible.