If admin shares are disable on both nodes of the cluster task scheduler might be visible remotely but creating a remote task using task scheduler also hangs.

Check the if the following key exists and remove it or change value to 1 and reboot machine:

Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Services\LanManServer\Parameters
Name: AutoShareServer
Data Type: REG_DWORD
Value: 0

http://en.wikipedia.org/wiki/Administrative_share – Administrative share

SQL installation log file last lines should be:

(...)
10/15/2009 00:32:13.207 Patching available passive node: node_name
10/15/2009 00:32:13.238 Waiting for first completed passive node
10/15/2009 00:32:13.254 Patching passive node: node_name

Normal installation log:

(...)
11/13/2008 17:05:07.428 Patching available passive node: remote_nome_name
11/13/2008 17:05:07.429 Patching passive node: remote_nome_name
11/13/2008 17:05:07.530 Task Scheduler: Created remote folder for product instance target \\remote_nome_name
(…)