Hey man, same thing is happening here. Not as much as to wet my shorts, but usually a small amount will drip out randomly, like maybe once every other day. It will leave a blot the size of a US nickel in my underwear,,, I dont know why this is happening... I do drink a truck load of water everyday, so I certainly intake more than my fair share of water. But this thing that has been going on for a cpl of months now has got me worried. Tiblu - has your problem gotten better or worse>? What have the docs told you? Get back to me and we an compare notes.
If it keeps getting worse you can always try a Cunningham Clamp. It clamps on the penis so you don't drip.
You can find some here.