With the fast approaching May version update bringing about the merging of all auction houses into Jeuno's auction house, putting up items for sale on the auction houses in nations Bastok, San d'Oria, Windurst, as well as the auction houses in Kazham, Norg, and Rabao, will be restricted between May 6th, 2011 (PDT) and May 10th, 2011 (PDT). Items currently on those affected auction houses will not be affected by this restriction, and can be bought or taken down normally.

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From Playonline.com:

In conjunction with the major version update scheduled for May 10, 2011, the contents of all the auction houses will be merged into the Jeuno auction house.

In preparation for the merger, the listing of items in auction houses in the following areas will be restricted between May 6, 2011 1:00 (PDT) and May 10, 2011 (PDT). These restrictions will not affect the bidding process or interfere with the removal of items that have already been listed. The ability to check a listed item's "Sales Status" will also still be possible.

Southern San d’Oria / Port San d’Oria / Bastok Mines /
Bastok Markets / Windurst Walls / Windurst Woods /
Rabao / Kazham / Norg

* Payments resulting from sold merchandise and items returned due to remaining unsold for the duration of their listing period will also be unaffected.
* Auctions will continue normally at auction houses in the areas not listed above.

We apologize for any inconvenience this may cause and thank you for your understanding.

*Further details on the maintenance scheduled for May 10, 2011 will be released at a later date.