Hello Pepsi,
I can't help noticing posts about achilles problems. I developed an achilles problem literally overnight, a few months ago. Prior to that I'd never had any sort of twinge at all in either of my tendons, even during (and leading up to) my first marathon in May. Actually, I think it was precipitated by doing too much speedwork too fast on a treadmill, when I joined the local gym after the marathon. In any event, I tried taking bits and pieces of time off but that didn't really help, and my heart wasn't really in resting as I'd just begun training for the Venice marathon.
Cutting a long story short, I went to a physio who pointed out that I have a bio-mechanical problem in both feet. (My achilles tendons are too short, and my heels have a tendency to point in the wrong direction. Maybe it's because I'm a piglet??...) The physio sent me to a podiatrist, who measured me for custom orthotics. They were made by a firm in the US, and I've been wearing them since the back end of August.
I wondered whether to be cynical, but I was desperate to get back to pain free running and so I went with what I was advised. Since I began to wear the orthotics (and I have them in my work shoes too) my tendonitis has significantly improved. It's not gone - I still get around on tiptoe for the first couple of minutes out of bed each morning, and the day after a long run I have some stiffness - but it's very much better than it was.
However... it hung around untreated long enough, when it first started, to interfere with the start of my Venice marathon training, and then it got worse when I did the Coast to Coast walk. The bottom line is that I didn't recover in time to really get over it in time to catch up with my schedule, and so I've finally had to recognise that I've just not trained properly for Venice (next weekend) and I won't be running. I wish I'd got it sorted out sooner.
If I were you I'd make an appointment with an experienced sports physio and ask him/her to take a look at your feet. If you have a problem (and presumably you do, or you wouldn't have pain) then it's best to try to nip it in the bud rather than allow it to become chronic, and interfere with your running on a long term basis. Everything I've read about achilles tendonitis suggests that it's something that should be taken seriously, as to neglect it can lead to major problems.
Sorry to waffle on for so long, but it's now my mission in life to try to warn other people to avoid the achilles problems I've had! :-)