Ive been using System Optimizer X for my HD maintainence.. Under that program, ive been repairing permissons. when i am done, i restart my HD, and then when my computer starts up, its kinda slow.. so then i run the Disk Utility under the System Utilities, and it finds like 4 or 5 problems with permissions. so my question is, which program is fixing things right? the computer's one, or the System Optimizer. Ive had similar problems with mac janitor and onyx