AHACT

Title: Allocating Memory Version: 3.0.3/3.0.4 OS: Windows 7 Java Version: Version 7 Update 5 Description of Problem: When I walk past my energy making machines it doesnt lag but when i leave to explore it lags (but heres my real problem) When i go to allocate more memory i have only three options 512mb 1gb 1526mb I have 3.00gb of ram Please help me! Error Messages: Error Log: