I get hung up on my own internal pronunciation so much that I won't recognize a name if someone says it just a little bit off. Typical work conversation:

"One of your clients is here. Elizabeth Dackrey."
"...I don't recognize that name."
"You just saw her yesterday!"
"I'm quite sure I saw no one named Elizabeth Dackrey yesterday."
"Hang on...wait. Liz--Lizabeth--"
"Lisbeth DeCree! Oh, yeah, her."

But I can't extrapolate the name from the mispronounced name, even when they're really close and I just saw the person the day before. Part of it is because I see the name in my head, too, and when the spellings don't match that just confuses the issue further.