HI, I have been a diabectic for about 27 years as well! I test around 6 times a day. It is amazing how quickly it lowers your bs's ; I also find it great when I am working out (cardio or weights). It is much easier to control when you don't have the long acting hanging around.
I think I said this, but, the only times mine are high are when something is not connecting. Mine was really high one day last week - turns out the tubing was not connecting to the lur-lock (I think that's what it's called). I discovered this after loading the insulin throught the tubing and noticing that it was not flowing timely. I usually just take it off and give myself a shot while I troubleshoot.
What kind of pump are you on?