I listed a domain once, took 5-6 days for them to add it. The entire time it was listed on their site, just not in my control panel. Apparently it got an offer during this time, because it was showing as having recieved 1 offer. Once the domain was finally added to my control panel, I wasn't seeing the offer. So I emailed Sedo to see if they could somehow let me see/accept/counter the offer, but they never did. I haven't had many problems with them since though. Usually if you point the domain to sedoparking before adding it to your portfolio it gets approved fairly quickly. Not sure if its manual or automatic though.