Also as others have mentioned I've had major stability problems with eclipse, mostly in connection with the perforce plugin.
Crashed so often I just gave up. Decided to work with Gedit for a good period before I was introduced to vim.
Have never even tried to use other IDEs unless I'm kind of forced to (like android development) and made sure to stay away from Netbeans.
Me personally I don't like Mac OS X or Ubuntu Unity. I don't say they are bad but I will make an effort to avoid having to use them. (And I can tell you why.)
I can clearly see how some people might have similar issues with my favourite software.
That said: if last time was a few years ago and you youch upon Java code again you could give it another try; maybe it works better on a modern machine?