Is there any way (in game) to turn down the mouse double-click sensetivity? I have my windows setting all the way down and for some reason when I play Runescape it is super sensative and goes off like mad. The most confusing thing is that it's not always like that. About half the time it's fine, the other half it's crazy sensative. Makes it very irritating to try and move stuff with the "drag and drop" feature.
I think this is a issue with Windows and/or your mouse, especially if it's random. Are you sure you are saving the sensitivity and it's applied after you restart?