Yes! That's exactly it! Though the difference is I never really reload, it happens...randomly or pretty much when I'm fighting for a longer time (like 1-2mns+). The thing is at first it begins to prevent me from using ANY abilities even if they are ALL mysteriously highlighted, the only thing I can do is auto-attacking until I refresh and go back to the Raid. Also it happens even if I don't use Caspiel's debuff...or maybe it still happens even if I wasn't the one casting that debuff?

And about older Chrome I'll try it out and see. I'll report weither or not things are actually getting better. Thanks for the tips.