Over the last year, it took from 3 days to 21 days to get money from MtGox, but at the end, I got it, so yes, chill.
(bitcoin does not care about holidays, weekends, ... while $, , ... or better, banks does)
Everyone should just stop sticking to MtGox with such experiences, trade on an exchange which has bank accounts in the country of your bank, where withdrawals can actually happen overnight or better.
I've been using Intersango and the longest I had to wait for a withdrawal processed was 41.9 hours! Yes, hours, that is 1.7 days. Usually I get my money in under 24 hours.
If there is no exchange with local bank accounts in your country, start one!
Or at least buy/sell MtGox coupon codes with people having an account in the same country.
So things don't have to go through SWIFT, which can not only incur unexpectable delays, but also unexpectable corespondent bank fees.
What countries are your banks in that you don't have exchanges with local bank accounts in that country?