Synched. Absolutely. I'm prepared to stick up for that one.
One word that really bothers me is arced/arcing. The c is indeed hard, so I believe (just as well if you think about it). We write picnicked, picnicking, but not arcked or arcking. I mean, they look ridiculous but at least they look how they sound. I believe the word was even spelt ark when it was brought in from the French. Arking, arked? I don't know. I'm stumped.
Apparently I'm not meant to post in this thread after it's been so long silent, and what I'm about to say is completely off-topic anyway, but just to say that I agree with Ollie on both the above counts.
'Synched': I don't see the problem, and there's no other way that works as well.
'Arc*ed/ing': extremely troubling. I have no suggestions.
Slightly more on-topic, I wonder how A's getting on with her Cowon iAudio. (Sorry if this has been discussed elsewhere since last August, I've only just discovered this thread!)