We've used cloth nappies since DS was a couple of weeks old. I found it easy pre weaning, less so now that the poo never seems to stay on just the liner and I have to fish any solid bits off (I'm never sure how much I need to fish off - any advice on that?!).
Anyway, I wondered how often people are washing them? I'm a bit paranoid about mould and was generally in the habit of washing every 2 days. But as we travel overnight with family a bit more at weekends we find it's much easier to pack disposables particularly if family are changing him. Which then means the nappy bucket isn't full (and we're often not around to wash them) until day 4... so trying to work out if that's okay or going to lead to them going mouldy!