Well, there are a few limits I can see. First, Wikka Wiki has a 2MB limit, but it also looks like the underlying hosters has a 2MB limit as well. You have to change the php.ini files in the wiki /uploads directory to break this.
Bluehost= explains how to do this. Note that this thing is [...]
Bluehost and Wikka wiki Upload limits
June 2nd, 2008 · No Comments · Geek
Tags: Directory·Few Limits·Filesize·Helpdesk·Hosters·Ini·Megabytes·Script Files·Upload Script·Wiki·Wikka