In the last 10 CD's I've burned I've come up with 3 coasters (CRC errors or 'cannot read file' errors). My CDR burner is a 52x TDK burner (which is really the guts of a really good burner - I looked it up one but forgot what it really is). I've burned somewhere around 400-500 CD-R's since I've had it. Normally I'd say it's gone bad and the coaster to good ratio will only start getting worse. But, I also know that I just switched spindles from a stack of Sony High speed 80 mintues to a Spindle of Memorex 80 minute 52x CD-R's. Is it at all possible that I have a bad spindle (something I've never seen)? It's just funny this started happening right when I switched spindles. BTW - I have no problem running out today and spending the $50 to get a new 52x burner..... just annoyed by the odd coinky-dink of the spindle change and problem occurance. Thanks....................... BTW - I've used Memorx spindles before with this burner and never had a problem.