First, to Justin. No, you can't screw it up. Psychos think that they are normal and everyone else is insane. So, what you see as the obvious answers are obvoius only to you.
However, they have ways of knowing if you are giving true answers or the "right" answers. It is called "fake-good". Then, once you have taken the test (which was meant to be given only once in a lifetime) you can score a flat curve. It basically means that you already expected to be hit with the wierd questions and answered accordingly.
The test used to be longer - over 500 questions. It was trimmed to remove ones that were outdated or refer to homosexuality, which is no longer considered a psychological disorder.
Now, on to alpha cookie. I "suffered" from depression for years and years. Went through a bunch of meds, and also "weaned" myself (although the last one helped me quit smoking in less than a week after 25 yers of a pack a day).
Even before I was diagnosed and medicated, I passed the MMPI with no problems. Later, when I disclosed all this on the questionnaire, the shrinks cleared me with no hassle at all. Depression is far more common than anybody thinks. It is usually not a serious problem, and has many common and treatable causes - such as the sleep apnea which affected you. Depression isn't even a good name for it. (Dysthymia is the medical term) Many people who are afflicted by the serotonin imbalance in their brain don't even feel sad most of the time. It is more like being tired and bored than sad, although sad feelings are definitely a frequent symptom. It is not even related to - and should not be confused with - bipolar disorder, which is a major cause of manic behaviour and suicide. Unfortunately, both diseases have been known as "depression" for a long time, which causes people to confuse or somehow connect the two.
The meds get blamed for a lot of suicides (especially by the "church" of Scientology) but we're talking about people who are medically predisposed to suicide anyway. Someone with a severe case of a disease, who takes a medicine that is normally prescribed for the disease, and then dies from an effect of the disease, was not necessarily killed by his medicine. But, for most of us, this isn't even a consideration. We needed the meds; we took the meds; we got better. Period.
The reason I am going so far into the details, and divulging so much about myself, is that I think it should be okay to talk about being sick, and the stigma attached to depression will go away when more people admit publicly that we have the symptoms. Whether you need to stay on the meds or not, most people still get better at some point. It is no big deal. Nobody should feel that there is something inferior about them because they have this. I consider myself to be rather successful in life and at work. I'm pretty happy most of the time, and never a danger to others. I'm sure that the same is true of you. Don't sweat it.