I did exactly what you did even burnt at 2x. Its reads and loads but sometimes it says 'reading erorr disc' during game but when i take the DVD in out it works again for bit.
Well the moral of the story is buy TDK DVD-R. NOT DVD+R
Update :
Managed to work DVD+R TDKs by burning at 6x and booktype DVD-ROM , this time thought I burnt Sonic & Mario at Olympics...
No way. I have like one legit game.(wii sports )
And I didn't get the Ps3 because its no hackabke and has ridiculous price tag. And 360 you cant play online so theres no point. But I did buy all my Ps2 games for 3 years only intill I found out swap magic