I recently had a problem with my hard drive and ended up losing it, so i had to switch to one of my other hard drives. Because i lost my minecraft folder i reinstalled it and got a few new mods for it. However since then i can only play it for a few minutes at a time before the game starts lagging badly, so much that i cant even move. This never happened before when i was playing the 1.1version of minecraft, but so much has changed since my hard drive died that i dont know what could be causing it. Anyone know what could be causing this and ways to fix it? Oh and just a note, but my CPU and RAM arent getting close to 100% either so i doubt thats whats causing it to lag.
I had to re install Minecraft today and i am having the same problem. I however did not get any mobs. I haven't played for about two weeks but pre 1.3 i never had this problem.
Problem with minecraft lagging badly