First questions is.... Why do you jog?
Really think this answer through. I tried looking up the top reasons people go jogging and found nothing so I'm going to think of the top 4 reasons and then lets see if jogging is a good answer.
1. "To get in shape" i.e. Fat Loss and Feel better. Look at the research that proves nutrition, strength training and metabolic circuits have a much greater impact than aerobic work. Also look at a sprinter/anaerobic sport compared to a marathon runner and let me know whats a more appealing body.
2. Relieves Stress/Mentally Soothing: If jogging gives you this effect than by all means continue the cheap therapy (unless your getting injured). I actually think the people who get this euphoric feeling are very good at focusing on their breathing. Similar to meditation, it will clear your mind of the rambling self talk.
3. Build endurance for a upcoming season: I have changed my opinion on this slightly. I think there is a time for some aerobic work for field/court sport athletes but its for about 3-4 weeks of a year or long term training program. There's also other ways to get this similar affect without the pounding of joints on the pavement. A suggestion is to by a heart rate monitor and for a 3 week period do 30-60 minutes to where your HR stays between 120-150. Read Joel Jameison's book Ultimate MMA Conditioning for more info on efficient conditioning.
4. To compete in Running events: If this is what you love to do than you definitely will need to have a good amount of jogging in your training program. Staying healthy is key so time for the next question.
Second question... Do you run with correct technique?
So for those in categories 2 and 4 here is some info that can help you run better and without injury. Running with poor technique is the reason so many people (80% of runners per year) become injured. Another major reason I rarely program lost distance work. How can one have poor technique? It has to do with how your foot hits the ground and the type of shoes you wear. Sorry to say that the $120 special running shoes do more damage than good. Go to this website that breaks down running mechanics and technique.
Here's two videos from the site that show the difference.
One thing I don't suggest is to immediately go barefoot/vibram running. Again ask a question.. "Am I ready for this?" Probably not. My suggestion is to first switch to a shoe like the Nike Free and if you want to try barefoot/vibram running than go to a grass field and start shorten your stride. It will literally feel like a whole new way of moving, so give it time. See if there are running coaches in your area who teach this type of running. If so it would be a wise investment that will save you from physical therapy in the long run (no pun intended).