Okay, when you're referring to yourself as the subject of a sentence, use "I." If you're the object of a verb or preposition, use "me."
The rule seems to have become as follows: if used with "and" the word "me" is never correct. This leads to "Please pray for my wife and I." ARRRRG! You wouldn't say "Please pray for I" would you? I am far from grammatically perfect, but this just bugs the crap out of I.
My guess is that people have said, "Jane and me are going to the pool" and someone merely corrected, "Jane and I." So when the pool is too cold, it is to cold for "Jane and I."
How do we correct this huge problem? Does this even bother anyone else?