Two significant technical problems hit Apple over the weekend, accounts say. The first is the discovery that early installers of last week's Lion/Mountain Lion Java update may have downloaded a premature build, xM4508, which can prevent some Java apps from working. The corrected version is xM4509, and is available via Software Update or Apple's support page. People can check which build they have installed by entering "/usr/libexec/java_home -v 1.6 -exec java -version" into Terminal.
