I have an i book 0s x 10.9.3 , like a lot of people here, i had the problem where lm does not open and bounces in the tray. I removed it, upgraded the java, downloaded the recent version and installed it. I now works.
however, my ibook is now considrably slower when LW is running. It sometimes takes up to a minute to switch tabs in LM or openning a Finder window. This is very frustrating , as i used to be able to work while LM was opwn in the background, and now i can't.
Any suggestions?