It went outrageously well.
Modul8 was solid as a rock as I pushed it as hard as possible for 50 minutes. Then I loaded in another project for the next group with a bunch of really long vids (all of which were not encoded to proper specifications because I didn't have time) and it just kept going without a hitch. Well actually I did notice one little bug near the end where video would freeze if it was the only visible layer, but I worked around it by keeping one other layer on at minimal opacity. But all this was done without ever restarting modul8 (and I actually had to start and use photoshop at one point too during all this.)
Very awesome and I just wanted to say thanks for such an awesome piece of software!