We're running the newest SVN version as of yesterday.
And no, we were only running ULX, but after the update we started crashing every time someone used !kick or !ban.. Not sure about the console commands yet. It would kick the user and then crash almost everyone in the server EXCEPT for the person who initiated the kick.
We installed ASSMod after that for admins to kick players with. We found that to be too confusing after awhile, so we removed it, and we're back to only using ULX. So we'll see what happens, but there have been no signs of clientside crashing (yet).
Other mods we have installed are: PHX, Wire, ULX_ClearDecals, MadCow's Weapons, Wire Money Detector, Catmull-Rom Cameras, and other small-scale mods.