Millisecond Forums

Hello,
A student reported that in some of your Mac in the laboratories seem to slow down/freeze at times for the experiment (though it seems to not happen during the exp). In one of them it wouldn’t open an Inquisit script (Inquisit was open and neither double-clicking nor using the menu would open it). The operating system is the same for all of them and the Mac are all the same (apparently). Do you know what it may be and how the problem could be solved?
Many thanks,
Elena