Ok as far as I know it shouldn't take that long for a trap to shut. I don't think it's something to worry about though so don't [img]http://www.**********.com/iBhtml/non-cgi/emoticons/smile.gif[/img] Are you feeding it dead food? That's no fun!
It is possible for the spider and other things to be too big for the trap, you can usually tell though if part of the body is hanging out or the trap didn't shut all the way. just keep an eye on it and if it starts to get black spots on it clip it off.