Seems that apache web server has a 2GB limit.... so i went digging around some more (love google) and found this:
Which is an official bug report to apache, and it was resolved it a solution by Joe Orton, I'm guessing an apache developer
only except, its a very complicated code and i don't know where to put it in/implement it. Any apache gurus know where this piece of code should be inserted? (for the full convo, look at URL above)
Or, as an alternative, can a xampp version be released that has a patched version of apache that supports files that are >2gb?