Not if it's small enough to ho inside.

thank you dscobsct it works !!!! but then sumtime later it comes back again. any more advice? did u have the same problem?

I get the exact same problem, I am convinced it's due to the screen protector not filling the entire front of the phone. the edges get full of grease and crud and it starts clicking and crunching.

I think the trick is just to keep it clean.
When it starts clicking I just wet a cloth and go round the very edge of the screen, pressing it in with my fingernail.

Seems to do the trick.

I have the same problem in the upper left of the screen. Hopefully it's nothing serious.

hey i got another query, even the bottom the the keyboard slider is a bit creaky, anyway to solve it?

Some people who have taken it apart and put it back together have reported a tighter slide.
Might be worth a go.

yeah mine does it all the time, every time it happens run that piece of paper under it, to clean it out, what happens is the screen gets stuck to the mank and is lifted, when you press the screen its got a little way to travel and clicks when it makes contact, keep cleaning and itl happen less and less, but wont go away entirely, especially if you got screen protector cause the grease and dirt accumalates more

Wow! Thanks guys. I was going to to make a topic of this as I thought my n900 had borked too. lol.

Mine has been clicking for some time now too and I though there was some holding glue that had cracked Just tried the paper trick and now theclicking noise has finally gone.

Thanks again. It has been driving me insane

thanx... any advice on the bottom of keyboard slider?