any upgrades available for Mac OSX 10.5.8?????

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Mac OS X 10.5.8 is Leopard. Mac OS X Leopard was launched in 2007 and is now discontinued, so Apple isn't releasing more updates for it.

Your only option is to upgrade to Mac OS X Snow Leopard, if your Mac is compatible > http://support.apple.com/kb/sp575 You can buy it in the Apple Online Store > http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard

Bought 10.6.3 disc and now it stalls at 59 minutes.

running Macbook DuoCore 2 ovwer 100 gis of space left.

What is solution?