Some one had a giant pit that they had mined out with a spiral staircase, so I placed lava, and then water, thus filling their entire mine with cobblestone! lol, it was on a factions server where greifing was alowed.
Check out the info tab on my server's facebook . We have all of our plugins listed and we also have our permissions files on there as well. Hope this helps!
This happens on my server a lot! It can get really annoying. I would suggest for the fountains you break the ice by hand, and after a while it stops freezing. I also would suggest you get world edit and world guard for your sever. I often use the /thaw command in order to get rid of recent snow fall and melt the ice. Just make sure that you hand break your fountains first because world guard doesn't do a very good job of that. Then you can create regions (Look up a tutorial if you don't know how) and flag them in order to prevent snowfall and this will keep most ice out of your sever. I use /thaw a lot!