I totally feel you. I've replaced my seals 2 times now in the last year, and it was still leaking. Recently, I tightened the bolts that hold the axle shafts in, and that seemed to stop the leak on my passenger side but not my driver's side. This past weekend, I removed the axle shafts again and put RTV around the seals, and then I tightened the bolts down as tight as I could (even tighter than before). I am hoping this will be enough to stop the leak, but it is too soon to tell.
I would rule out the axle seals being the problem, since you just replaced them and there is no way they already went bad. Don't be like me and spend $100 on new seals when the old ones are still fine. Did you put RTV around the seals when you installed them? If not, I would try that, and then tighten those 4 bolts that hold the axle shafts in as tight as possible.