I even asked them to just convert my Sterling to EUR because allegedly SEPA transfers would be faster - but they can't do that even at the market rate + a fee. Then for SEPA transfers too they say it would take at least 20 days for the payment to clear.
Every currency at Mt Gox obviously has a problem - which means the company is in trouble.
The SEPA delay is caused by high volume and the EU Payment Service Directive limiting MtGox to 3 million EUR worth of transfers within Europe each month. PLN is included in this limit.
I got word of a GBP wire transfer from August arriving in September, btw. I tried to make the recipient report the details here, but he hasn't. I can understand this perfectly well. As soon as you report good news here you are dismissed as a MtGox shill, and many people want to keep their economy private.