It appears to have not posted to my card yet.
I cannot get through on the phone to Swissair - perhaps shutting down operations includes shutting down customer service! I have been issued an electronic ticket and a booking reference code.. My credit card company has said that they would contest the charge if it is made in the future. Hopefully this is safe enough.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Rudi:
booked and not paid (not charged your credit card) yet?
cancel now the booking (and at the same time inform your credit card that they should not honour any later charges).</font>