I saw that some other people encountered the same problem, but the forum was closed.

Thread Title:
Frozen Controls

Platform:
Windows 7

ISP:
Shaw

Type of Internet Connection:
Cable

Internet Connection Speed:
7.5Mbit/s

Date & Time:
April 10, 2011, ~4:30PM, EST

Frequency:
Unknown, error occured at least twice

Character Name:
Norman Riddell

Race:
Hyur M, Highlander

World:
Mysidia

Class/Skill Rank:
Archer, Rank 30

Physical Level:
45

Area and Coordinates:
Gridania, Lancers' Guild

Party or Solo:
Solo

NPC Name:
Willelda

Monster Name:
None

In-Game Time:

~6:00

Steps:
Targetted and Selected Willelda in Lancers' Guild
Player Controls and Menu Frozen
Camera viewer controls still functional