Disable or speed up DLTK indexing in Eclipse PDT?

Question

I am using Eclipse PDT Helios with Aptana Studio on Windows XP SP3. Very often, my workflow is interrupted because Eclipse starts a DLTK indexing process that l

Answer 1

I also have/had this problem and turned off "Build Automatically" in the projects menu. Which seems to have resolved the problem for me...

So question is, and please excuse my ignorance here... but what is "Build" required for in PHP world.