Well actually the issue has gotten worse. It now does it during boot up and/or in OSX or Windows. Also I have done no upgrade recently. My mbp is currently at an icenter in town and they are saying that its the lcd that's bad, but the lcd was replaced one year ago by apple. They want to charge me 620 Euros!
So I contacted apple and they are suppose to make an exception in my case even though I am way out of warranty. I will now be on my
5th lcd panel and second logicboard.
UPDATE:
Ok so Apple made a big exception and is replacing my old Santa Rosa with a 15" unibody with similar specs, matte screen option and one year warranty, so I can't really complain too much. Apple service and support is quite remarkable really, but then again we pay for this service.
I love my old classic mbp and I'm going to miss it! But with all the issues I have had I think its time to move on. Plus I hope I can retire myself from this never ending thread soon.