No doesn't look like bugs - looks like dirt droppings LoL - but how could she be that dirty? Do you have any idea what ear mites do? her previous owner said she has had trouble with ear mites in teh past and today I noticed Satin itching her ear so hard I was afraid she was going to make it bleed.
Given her history and her scratching, I imagine ear mites are a possibility. I've never had to deal with ear mites before, although I just checked a book I have and it says to gently massage the back of her ear at the base with your thumb and forefinger (if she'll let you!). It also says most cats will enjoy it when you do that or, at worst, they might try to run away. But a cat with ear mites will usually start scratching their ear vigorously. You can give that a shot until another member comes along who knows more about ear mites than I do!