Gear Problem!!

[Euphoria]

Dear all,

I drive a 03' manuall boxster s.

Last night i was driving and everything was normal. However i parked my car for a while "engine still on" then when i put the car into the reverse gear it went forward instead of back.

That shocked me and i noticed that the shift stick became kinda loose. There was no resistance in the gateway between neutral and reverse.

Then i move the stick through all the other gears and played around with clutch and everything went back to normal!!!

This happened to me again later that night and everything went back to normal again.

I would really appreciate it if someone has any idea what could have happened.

I'm worried it could be a serious problem.

Thanks.