Rear Axle Oil Seal

Hey everyone!!! I own a 03 Tacoma TRD wit a 6cylinder engine on it. I have a problem though. My rear axle oil seal leaked in May, 03 and the dealership replaced both rear axle oil seal. Now it's leaking again...this morning i found the same problem again. Will someone pleez help me??? Is the seal suppose to last that long or is it a recall problem???

How many miles? I would expect one of a few things.
Either they:

Nicked the seal when installing it over the axle splines

Or

Did not notice a worn axle bearing, which would place more pressure at the top of the seal, alowing fluid to seep at bottom

or

They did not notice a galled surface on the axle shaft which has worn the new seal

Thanks man

I've got a '98 Tacoma that my mechanic noticed one of the rear axle seals leaking. Since it was still under warrantee at the time I took it in and the dealership replaced both rear axle seals as well as both rear brakes. It only had around 45,000 miles on it, so maybe theres a problem?