Bot suspicion

[Manimal 42]

How do you know if you are playing against a bot? I ask because i played a series of $5 NL heads up matches against the same player and he/she/it was so fast, so consitant that I began to wonder. I asked as much in chat but got no response. Now I know, that's no proof but it was the raises that were niether pot sized nor min raises, ones that you need to type in that were faster then I could imagine a human typing.

I've never suspected I was playing a bot before. I did e-mail UB to ask about the player. I hope I'm not being paranoid or just dumb.

I did figure the player out. Lost the first match and won the next two. I just got burned out by the speed but I should have e-mailed support and kept playing this he/she/it who was playing the same style (Tight with hand selection pre-flop, pretty LAGish after, unbluffable). My bad.

Anyone have any "Tells" for bots? Do they play NL????