Well I'm not entirely sure what point you were trying to make in your original post.
- The SF.bin is the code emulation part of the avast and is downloaded or updated on virus definitions updates. So Rkill is wrong about that, but essentially Rkill is designed to stop processes (which presumably it considers malicious) before you go hunting malware. I have no idea how it determines that, but it is wrong in this instance.
So on to your problem:
I haven't been able to get my aol mail using outlook the last couple days and it said something about my memory being used up, then it was trying to update for some reason and it got very very very slow, and I'm not used to that.
If you can be more detailed about this, e.g. the full error message, as your description doesn't ring any bells for avast errors/alerts/warnings, etc.
If you can also give us some information on your system, OS, RAM, CPU, etc. ?