i'm having a problem with the bolt on the crank side of the bottom bracket. it keeps coming loose on me i have taken it all the way off and wiped off the xcesive grease and tryed a few different brands of locktight to keep it in but it keeps coming loose on me, i ride a 2006 kona shred if that makes a difference and i am the only one with this kind of problem, i ahev tried different bolts and washers but no lcuk yet, any suggestions?

How tight do you torque it? The recommended installation torque is about 35 foot-pounds which is unbelievably tight. If you don't have a torque wrench, you will just about never tighten it adequately. A normal length hex wrench is totally insufficient.

I am a little unclear. Is it the bottom bracket that is coming loose or the bolt that secures the crank to the spindle? If it the second, you can use a hex wrench and a small piece of pipe as a cheater bar. The added leverage will help you get it tight.