Starter Motor or ignition problems? Help!

[martmart]

Hello, I've recently got a 1998 Boxster 2.5. I love the car but I'm worried about a screeching noise on startup that occurs about 60% of the time. I think it sounds like the starter motor not disengaging quickly enough and it only lasts for about 1-2 seconds after the engine starts. If it is the starter does it mean its about to give up or can lubricate/ repair it?

I did also wonder if it could be to do with the ignition switch as unlike other treads its not hard to turn but I do have to turn the key back to position 2 gently after starting to ensure the wipers etc work!

The only other idea I have is that it could be a belt squealing but I not sure about that one!

Thanks to anyone that can help.