I like Greg's idea of fetching the next question. While the student is working on one question, you could asynchronously fetch the next or even the next couple.

>Yeah, if this was a Web app I wouldn't have the questions as it 'forces' you to close inbetween - almost like being on the mainframe again (grin). Unfortunately, we're not using any kind of framework here - and it would take forever and a day to bring one in.
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>This is a computer adaptive test that will have anywhere from 30 - 160 people taking it on any given week. It's also a timed test, hence my concern for performance.