OK, i hassled the Service Centre and also Apple Customer Service EVERY DAY last week. I was always polite and never lost my cool.
Each time I called, both parties said they were waiting for an ETA on the lcd. The service centre I went too seemed hopeless, and in fact, it was them who suggested I speak to Apple direct. As far as I was concerned, they are there to do a job (I have 3 year Apple "care") but it seemed like they didn't really care.
So after speaking to them everyday, and reminding them that the service centre had my laptop for 3 weeks and still not ETA given, Apple eventually said they would look into replacing my machine. Whenever I queried why it was taking so long for the lcd part to arrive (here in Australia) they could never answer the question directly, although one customer service person let it slip that lots of people were waiting. So it seems that this pixel issue is something that many Powerbook 17" owners are experiencing, which in my opinion, demands a total recall of all products.
So at the start of this week, after it was ME who called Apple and chased it up, Apple said they would replace my machine with a total upgrade (a 17" Macbook Pro). It's due to arrive next week.
On another sour note, when I asked the service centre about a data transfer from my useless Powerbook to my new computer that's due next week, they told me they would charge for the data transfer!!!!! Even thought I have the 3 year Apple "care"!!!!!!!! When I brought this up with Apple Customer service, they offered to take care of that charge.
I'm really not sure what you should do, since your warranty has expired
Have you spoken to Apple Customer service and offered to pay for a new lcd? There's definitely something fishy going on if suddenly, every lcd for the 17" Powerbook is coming up with vertical pixel coloured lines and then Apple says they are out of stock
Unfortunately, every forum I have come across with this, the owners have experienced this problem after a year of ownership (with many people not having the extended warranty).