Why does my server keep crashing?

SomDaWolf

Tree Puncher
#1
So ever since the 1.7.0 update my server has been insanely laggy, and goes offline for hours at a time. I have performed a rollback and restarted it, with no positive results. I was told that the Log Block plugin could be he issue, but nothing has changed since it was turned off. I was then instructed to cut down on the amount of blocks with changing textures (water, prismarine lamps, etc.) But I can't stay online long enough to do anything about it. Is there anything else I can try?