Jumping out of gear ?
 

A friends STI 03 has started to jump out of 3rd gear mainly when cold.
Anybody have any idea why, or past experiences ?
Thanks in advance

P.S. 35K on the clock

Have you checked the gearbox oil level? (dipstick is in the engine bay usually by the intercooler).
If thats ok then it sounds a bit more serious and id take it to a dealer (if still warrantied).
Is the car still standard or modified?

Tony:)

Have checked this oil and this is fine, the car is standard not modified.