Flash Drive running slow (hangs up)

The dialog you're describing is the Slow Script dialog.  It occurs when we observe that a piece of Flash content (in this case, the quiz program you're running) is consuming an excessive amount of CPU time.

I'm not aware of a major performance regression affecting a significant portion of the population, so there's probably something a little more nuanced going on.  It could be that the content was performing marginally before, and a recent change just pushed it over the edge.  We are constantly hardening Flash Player from a security perspective, and any time that you do additional processing, there's an associated computational price.

Without and real details, there's not a lot of advice that I can offer beyond minimizing the amount of other processing that might be happening on the computer at the same time.  Close other open programs, take a look at what's running the background, make sure that any antivirus scans or other CPU intensive things aren't happening while you're using that specific program, etc.

If that still doesn't help, we'd need to actually reproduce the problem to understand what's going wrong.  In all likelihood, there's something inefficient happening in the content. 

I'm also personally curious about whether or not it would perform better if all of the assets were running from the local disk instead of a CD.  ( If for instance, reading a particular asset from the CD isn't working perfectly (there's a scratch there, etc.) and the content is polling continuously instead of waiting patiently for the data to become available, that could cause Flash Player to chew up a lot of CPU time.  In general, it's this kind of "tight loop" in a program's logic that would end up throwing the slow script dialog.)  There are a lot of programs that let you make an image of the CD (.iso) and run it from a virtual CD drive.  It might be worth a shot.