Yes I did try that but just sometimes it gets it wrong....
Anyway my ddns is still working as my IP has not changed recently. The only reason I knew something was wrong was that they sent me an email during the night to say my host had not been updated for a couple of weeks. That in itself is not unusual as my router only does it if the IP changes I believe. However I do run their client and that was having trouble getting to update their site. I hope this is not an indication of how (un)reliable they are, previously I used dyndns and never had any issues with them.
Stuart