randomly unresponsive black screen - possible hardware problem

I've started having the dreaded frozen phone/ black screen issues for a couple of days now on my i9000. It all started out of the blue after two weeks since i bought the phone. It felt strange because i had no previous problems (even the gps works)  and i never dropped it (at least not before this started happening). At first i was sure it was a software bug but then i noticed something strange: if i squeeze the phone (index and thumb) just below the samsung logo the screen starts flickering and even turns off (the reverse is also true. .. With the screen turning on). This even brings up the phone from its " black-screen-almost no button responsiveness-with the two bottom soft keys lighting up" state that i have read before. It also explains why it sometimes (randomly) stops working: my leg probably squeezes the phone since i keep it in the trousers pocket.  I would like someone to confirm if it works on their phone (with the same screen problem) because this means that it's probably a bad contact at fault.
NOTE: don't crush the phone but give it a firm squeeze.

1. Have you upgraded your phone?
2. Backup your data!
3. Try to do a factory reset!

brother your problem solved or not please inform mee i have just bought Samsung galaxy s1 and facing the same black screen problem.