Two weeks and still not dry sounds unusual... I would suspect that the original finish on the desk was still on it when the new paint was applied and that there's a difference in the formulation of the two - some bizaare chemical reaction may be preventing the new paint from drying properly. If you remove the new finish and apply another the same thing may happen - I would be inclined to leave it for a couple of weeks (because I'm lazy) and see if it eventually hardens off. If not, it's sleeves up and stripping back to the bare wood.
Good luck...
Peccavi, October 2009