TL;DR:
Scripts that reply on xml files numbered 1 through 4 should be updated to check for 1 through 6.
Explanation:
A number of wikis have stubs and page content files generated 4 parts at a time, with the appropriate number added to the filename. I'm going to be increasing that thi month to 6.
The reason for the increase is that near the end of the run there are usually just a few big wikis taking their time at completing. If they run with 6 processes at once, they'll finish up a bit sooner.
If you have scripts that rely on the number 4, just increase it to 6 and you're done.