download successful, installation hangs

Hi There

I am running xp pro sp2. Various updates have downloaded but when I try to
install any of them, I get a "Initialising Updates" screen which then just
hangs.

When I try to cancel out of it, the screen updates to "Canceling Updates"
but then hangs again. The only way to get out of it is via the Windows Task
Manager.

The last entries in the windows update log read as follows:
2005-09-15 19:51:31 1152 134 AU AU received install approval from client for
1 updates
2005-09-15 19:51:31 1152 134 AU #############
2005-09-15 19:51:31 1152 134 AU ## START ## AU: Install updates
2005-09-15 19:51:31 1152 134 AU #########
2005-09-15 19:51:31 1152 134 AU # Initiating manual install
2005-09-15 19:51:31 1152 134 AU # Approved updates = 1
2005-09-15 19:51:31 1152 134 AU <<## SUBMITTED ## AU: Install updates /
installing updates [CallId = {811EE061-2985-407D-BEC9-CE9905C009E7}]
2005-09-15 19:51:31 1152 490 Agent *************
2005-09-15 19:51:31 1152 490 Agent ** START ** Agent: Installing updates
[CallerId = AutomaticUpdates]
2005-09-15 19:51:31 1152 490 Agent *********
2005-09-15 19:51:31 1152 490 Agent * Updates to install = 1
2005-09-15 19:51:31 1152 490 Agent * Title = <NULL>
2005-09-15 19:51:31 1152 490 Agent * UpdateId =
{E5F21832-ED23-4339-BA4C-F63089DD1AE8}.103
2005-09-15 19:51:31 1152 490 Agent * Bundles 1 updates:
2005-09-15 19:51:31 1152 490 Agent *
{2C915E53-F7B1-4246-A8FC-E67D599934A0}.103
2005-09-15 20:17:36 1152 134 AU AU setting client response for sessionId 0x0
to 'Active'
2005-09-15 20:22:39 1152 5e4 AU AU setting client response for sessionId 0x0
to 'Active'
2005-09-15 20:22:39 1152 dc4 AU AU setting client response for sessionId 0x0
to 'Active'

How can I install the updates?
Thanks
Sarah

Sarah here again!

Actually, Windows Task Mgr didn't cancel the update, I had to reset the PC
eventually!