I purchased a new 2009 Mazda5 GT in January and last week my security alarm went off for no reason three times while parked in the garage over a one week period. This week the dealer checked everything and couldn't find any problems. They also called Mazda headquarters and filed this with their technical support. They've reset the main computer on board and I hope that works. I have no add-on products, just the standard factory installed Security System etc. Anyone else experienced this problem?