I haven't had much interaction with the co-worker lately, both of us happily doing our own thing, and the bits of interaction I've had with her haven't been all that bad.
She comes into my cubicle this morning and asks me a question. A question that was answered in an email sent by our supervisor last week. An email that she got. She just didn't bother to read all of the words.
Blah. I guess it isn't a huge sin. Still, it pisses me off when people don't read things.