Since you initially had a failure, that means that water did get inside the camera.
When the water evaporated the problem went away.
But the bad news is, that the water left salt inside the camera.
Salt will corrode any metal or electronics it comes in contact with.
From what I hear, most camera makers will not even try to repair a camera that has been subjected to salt water. If they do, they will not guarantee the work.
So, just keep enjoying the camera and hope that no salt got into the wrong places.
If corrosion is taking place, it is just a matter of time before something fails.
Then.....toss the camera and buy a new one.
I have a problem, while hiking along the beach last sunday I tripped and my camera got dabbed (note dabbed) in the seawater for about just one second.
After heading home, I noticed my on-button functions didn't work at all except the shoot button.
But just today (thurs), it appears my on-buttons (ie: Zoom in/out, Delete button, scroll butons) now works. but I am concerned with my camera still. I hear that sea water isn't healthy for a camera, but how concerned should I be since it still functions fine and can still take pictures, delete them, modify them and zoom in/out no problem.
Is my camera still okay or should I still get it fixed?