Also stuck after creating Materia

[Rubicon]

Platform: Windows 7 Home Premium 64-bit, Service Pack 1
ISP: Cable One
Type of Internet Connection: Cable/Wired Connection
Internet Connection Speed: 10mbps
Date & Time: October 9, 2011 1:40 AM
Frequency: Twice
Character Name: Rubicon Vale
Race: Hyur Midlander
World: Mysidia
Class/Skill Rank: Weaver 16
Physical Level: N/A
Area and Coordinates: Eastern Thanalan/Central Thanalan
Party or Solo: Solo
NPC Name: N/A
Monster Name: N/A
In-Game Time: 4/20
Steps:
1. Created four materia in a row from Dated Bone Ring.
2. Fourth materia created Strength Materia I.
3. "Materia conversion successful!" window cannot be closed or moved.
4. No in game menus would work by mouse or hotkey. Had to close the game client to exit the game.
5. Second occurrence happened with one materia created, Bloodthurst I by Dated Bone Armilla at Camp Black Brush. No menus worked. Had to CTRL-ALT-DELETE to close game client to exit the game.