WoW won't update

The World of WarCraft updater stays on zero indefinitely, please help.


SYSTEM SPECS
Manufacturer: Acer Incorporated

Mainboard: Acer EM61SM/EM61PM

Chipset: nVidia 6100V

Processor: AMD Athlon 64 3500+ @ 2200 MHz

Physical Memory: 1536 MB

Video Card: Nvidia Corp GeForce 6100 nForce 40

Hard Disk: Hitachi (165 GB)

DVD-Rom Drive: HL-DT-ST DVD-RW_GSA-H11N

Monitor Type: Acer AC713 - 16 inches

Network Card: Marvell Semiconductor (Was: Galileo Technology Ltd) Yukon 88E8056 PCI-E Gigabit Ethernet Controller

Operating System: Microsoft Windows XP Professional 5.01.2600 Service Pack 2

DirectX: Version 9.0c (July 2007)