Got struck when talking to some NPC

[Validas]

Talking to Willeda in the Lancers Guild with no quests open but all Lancer quests done I got stuck. I couldn't even log out just chat as listed above.

I also experienced a problem with Willeda last night. After clicking on her all input except camera control became unresponsive; all keyboard and game-pad commands did nothing. I didn't even get the NPC dialog window. It seemed the game continued to function as normal though as the NPCs I could see were still shuffling their feet and such.
Had to Ctrl-Alt-Del to force the game to give me the Direct-X error and crash out.

I am using the stock FFXIV font. Win7 x64 | AMD Athlon X4 3.1 | 4gig DDR3 | ATi 5770