With a fine a tooth comb?
Quick glance?
Reason I'm asking is because I aim to do it once a month (make sure all payments have gone in/out, any requested refunds paid, not charged twice for anything, no rogue payments etc.). But I just never get around to doing it and end, like today, going over bank statements since October. A couple of queries have come up, few I've been able to resolve (in that it was all correct actually) but too long ago for me to remember for a few of them!
Anyone actually had missed/rogue payments or I'm guessing that's really rare?