I know flax seed oil, when heated, can become not only rancid, but turn into transfats.  Not only does it lose its good proprties, but it becomes "bad for you." 

I fear the borage oil may be the same.  The company says "refridgerate after opening" and not to "expose to high temperatures."  This makes me suspicious that, at the least, that the capsules will be worthless; at the worst, they may have gotten hot enough to become trans fats.