I've been watching this thread for a little while, now. I have the same issue as most others here...bubbled, brown and cracked. Fox Toyota in E. TN = FAIL! in regards to any help on the issue.
So, I've ordered some new DEPO lights to replace the old OEM's. Now, I'm looking at keeping it from happening again with new DEPO's.
I found these DRL LED's (with load resistors already on the LED): http://www.carid.com/2009-toyota-tac...-10257304.html
I think these will solve any issues with the heat buildup of the incandescent bulbs...now I'm a little concerned with the load resistors on the LED's themselves. I have an email into them asking this very question. I'll post up their response as soon as I have one.
As another note, these seem to be made so as not to create the fast-blink error the regular LED's have. Fingers crossed that this is a one-stop fix for the problem.