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Mac latest java ( 1.5.0._30 ) not work with firefox 5

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I have recently updated my Java on Mac machine ( OS 10.5.8) . However, Java plugin is not being detected by firefox 5.

I have recently updated my Java on Mac machine ( OS 10.5.8) . However, Java plugin is not being detected by firefox 5.

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See this:
http://lists.apple.com/archives/java-dev/2011/Jun/msg00115.html

Looks like Apple broke Java in 10.5.8 for Firefox 3.6+ versions by removing Plugin2.

"With this release, we have greatly enhanced the functionality of Plugin2 on Mac OS X 10.6, but this came at the cost of having to remove Plugin2 from Mac OS X 10.5, due to the lack of necessary OS graphics primitives and the capabilities of J2SE 5.0. We are looking forward to making Plugin2 the default applet plug-in in the near future, so please let us know if there are show stopping issues that prevent your applets from running inside it."