but I could find no report of Sepa transfer still stuck after 6 weeks, like I'm experiencing now
A SEPA transfer usually takes 1 day to clear.
Yes, but Gox supposedly has a quota of 200k EUR per day of SEPA transfers. (It used to be 100k per day, and this was confirmed by someone who actually called their bank in order to ask - I don't know if the bank actually divulged information about Gox (I think that would be illegal) - but probably they asked what kind of limit would a foreign business opening an account have.)
For comparison - I casually made a SEPA transfer of 1,000,000 euros from my personal account to a company in a different country.