In an effort to keep old hardware running trying to build Android Apps, I was really looking for a way to speed up eclipse. The best improvement I've found is to run using the Sun (Oracle) JDK, it's impressively faster, but for some reason or another you can't just apt-get it anymore.
I found a github site https://github.com/flexiondotorg/oab-java6.git that handles that, however it required a few extra steps, so I just made a quick script for it.
I'm sure there are some parameters that can be added so you don't have to keep adding yes to things, but this was a quick and easy with minimal monitoring, if you make an update (just fork the gist), then let me know and I'll include it here.
Here is the gist: