Well, I haven't, that's not to say that the previous owner didn't. Though the car was dealer maintained, I have a list of jobs done, all in code though.
So, the census is, it could be:
2. Slipping Tranny
3. Dirty Injectors
4. Bad Coils
Well, I don't think it's normal. If the tranny was slipping, wouldn't it be evident all the time? Just used an injector cleaner, but I really don't see how that would be the issue. Bad coils: Not sure on that one, but seeing how the coils are an integral part of the engine, wouldn't I experience the same at all times?