IMHO, the following may help :
a. Is this problem repeatable ? If yes, now often ?
b. Run it in another machine with identical software configuration, will the situation the same ?
If the answer for both are yes, that looks like an application / software compatibility problem.
If yes for a but no for b, I will suspect it may be hardware problem / hardware related issue
If the answer to both are no, you need help from someone else.