Board Thread:Support Requests - Getting Technical/@comment-1323688-20130822224518/@comment-1975320-20130823014940

This can be due to several things:
 * 1) There hasn't been activity for a very long time.
 * 2) Someone has edited a lot of pages within a short time (most likely a Bot)
 * 3) You have selected to only see very current edits
 * 4) Someone has edited page many times, 100 edits on one page is enough to crop one page of wikiactivity into one line.

It is bound to be one of these, if not, use Special:Contact to contact Wikia, but only do this if it hasn't been solved by itself in a day.