What about cleaning the DVD reader For God sakes
you know Dust and filth can make things dificult to read for the laser.
and what about beeing a little naughty and use an CD/DVD image of SH3 or an No CD/DVD fix.
I used it because my little Bro and Sister like to use on of my Games for their own PC and I have seen them treating my precious bought games....So I hide them in a Box somewhere and used CD/DVD images or if it doesnt works that way an No CD/DVD fix...Only my Online games are untouched but still my Games are Hided so they are not going to look like on of my games
Sorry for the language...but that was so hard to see when I took out the CD .... my Bro and sis created an nice big Crack from the inside to the readable section of the CD....

the cd became unreadable to install...so from that day on I only used my CD/DVD's for Online games that required untouched exe files. SH3 currently runs on Image coz the pic .... is the SH3 DVD!!! lucky I got the game fully Imaged(before my Bro took it, I mostly create images of my new bought games, just for back-up) so I have an replacement so I can reinstall the game.