This has to be a personal record. I just finished up a customer phone call that clocked in at more than six hours.
→[More:] It really wasn't that bad - I was performing some support duties, and going over the project we had built for a client piece by piece, detail by detail, and the client is really not bad to work with at all, but I am just not used to being on the phone that long. Oh well, at least we took thirty minutes to grab some lunch.