In my opinion, the last thing bitstamp is interested in, would be to dry out the incoming stream of fiat. So if incoming transfers are not showing, I assume there is some genuine issue with the particular transfer. Missing/wrong reference number, currency conversion issue (the problems posted on reddit appear to be non-SEPA), whatever. The customer support of bitstamp is not exactly speedy at the moment, but based on my recent experience, things will be sorted in the end. bitstamp might be not exactly an ISO9001 enterprise yet, but so far they seem to be honest. That's worth a lot in this particular environment.