Yesterday I send 2,2 BTC to my Bitstamp account. The transation is at least 50 times confirmed but my bitstamp account does not shows my BTC's.

Is this a familiar problem and what can I do?

Transaction details:
Status: 56 bevestigingen
Datum: 10-4-2013 18:39
Aan: 19YtiVABgQpG9dkGB1fxGuxf3pm4Py4SkF
Debet: -2.27605625 BTC
Netto bedrag: -2.27605625 BTC
Transactie-ID:: 79ab8cf0f414b137213e4b96bcb54c891d1ca097518e9cf26e59b0785880df15