I noticed the leak before the last oil change and it continued after that. I think it has slowed with the replacement of the sender, but I'm pretty sure it has not stopped (new oil where I cleaned up).

First thing I checked was the filter. About a year ago, I had quite an oil leak at the filter - I could only get it to stop with an extra half turn of the filter. I use Toyota filters almost exclusively, with an occasional Purolator thrown in - I think the one I was using at that time was a Toy filter. Anyone else find that the Toyota filters need a little more tightening than those with a solid rubber gasket?

Where I'm finding the oil is forward of the oil cooler, but I'll take another look at that.

Cam seals were replaced at timing belt replacement about 10K ago.

Crank seals, I dunno...