[kubuntu] Latest version that supports MacBook 3-1 dual-boot OS X 10.5.8

Anybody can advise me if I should upgrade to Kubuntu 12.04 LTS or earlier version? I have just installed 10.10 Maverick a few days ago and been quite happy with the performance on my old MacBook. I wonder, though, if it's too old and perhaps incompatible with the currently supported versions of Kubuntu.

Thanks,
Sumeth