Node.js is an evented javascript I/O framework using Googles V8 JavaScript engine. In the NodeJS wiki there is a good article on how to use Eclipse as Node Applications Debugger. When I tried it, node stoped with segmentation fault as soon as the debugger connected to the process. The fix is easy: set GCC_VERSION=44 before running make during node installation. Viola, it works perfectly.
Unbelievably useful tip. This bug was costing me hair!
I was hoping this would solve the recent problem I observed with eclipse on Indigo/MAC OSX, Indigo&Helios/Ubuntu where the debugger attaches to the standalone V8 engine successfully (pause works) but does NOT do breakpoints any more. Worked before late December update from chromdev. No does not work even after full re-installs of eclipse. Sigh.