Keep in mind that the lag experienced when doing things like changing equipment or working with your inventory/retainer are based largely on server load which is in turn influenced largely by the number of other people standing around you. When I logged in right after maintenance things were incredibly smooth as I was one of the first people to put myself in a specific market ward, but I don't expect it to last after the servers have been up for a couple days again and there are 100 people loitering around town with their bazaars up.
I don't think there was any patch, I think this is what people are noticing. Also, server populations are continuing to dwindle. Last week on Selbina, during JP prime time there is still 3000 strong, but during NA prime time it was down to about 1400. All of this week, I saw that 1400 become 1100. Edited, Oct 22nd 2010 8:27pm by Jeraziah