IF you installed the 10.5.3 update AND you are now having problems WAS your machine originally shipped from Apple with Leopard or did you upgrade to Leopard from an older Apple operating system? YES NO note: If you have an Apple refurbished machine that was originally manufactured with an operating system older than Leopard please explain despite whether or not you are having problems after doing the 10.5.3 update, but, for the poll, consider your Apple refurbished machine to be originally Leopard. important note: If everyone who answered http://forums.macrumors.com/showthread.php?t=490276 would be gracious enough to answer my post here we may, I believe, be able to derive some useful information. I believe the first, most reasonable, "pattern" to look for is "was the machine now having a problem with the 10.5.3 upgrade originally a Leopard machine". Thankyou For Contributing.