Description of problem: NetworkManager times out when trying to get its IP address (DHCP) from a Belkin G+ MIMO Router.

Version-Release number of selected component (if applicable): NetworkManager-0.7.1-4.git20090414.fc11.x86_64. Wired Network Hardware: Broadcom NetXtreme BCM5754 Gigabit Ethernet PCI Express.

How reproducible: happens everytime I try 'Wired Network'. Wireless Network works with no problems (Realtek RTL-8185).

Steps to Reproduce:
1. Click on NetworkManager (on Gnome panel).
2. Click on 'System eth0' (under 'Wired Network').
  
Actual results: (from /var/log/messages)

Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) starting connection 'System eth0'
Jun 22 20:55:05 localhost NetworkManager: <info>  (eth0): device state change: 3 -> 4
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) started...
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) starting...
Jun 22 20:55:05 localhost NetworkManager: <info>  (eth0): device state change: 4 -> 5
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) successful.
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) complete.
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
Jun 22 20:55:05 localhost NetworkManager: <info>  (eth0): device state change: 5 -> 7
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Beginning DHCP transaction.
Jun 22 20:55:05 localhost dhclient: Internet Systems Consortium DHCP Client 4.1.0
Jun 22 20:55:05 localhost dhclient: Copyright 2004-2008 Internet Systems Consortium.
Jun 22 20:55:05 localhost dhclient: All rights reserved.
Jun 22 20:55:05 localhost dhclient: For info, please visit http://www.isc.org/sw/dhcp/
Jun 22 20:55:05 localhost dhclient: 
Jun 22 20:55:05 localhost NetworkManager: <info>  dhclient started with pid 3682
Jun 22 20:55:05 localhost NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
Jun 22 20:55:05 localhost NetworkManager: <info>  DHCP: device eth0 state changed (null) -> preinit
Jun 22 20:55:05 localhost dhclient: Listening on LPF/eth0/00:1a:a0:df:9b:eb
Jun 22 20:55:05 localhost dhclient: Sending on   LPF/eth0/00:1a:a0:df:9b:eb
Jun 22 20:55:05 localhost dhclient: Sending on   Socket/fallback
Jun 22 20:55:06 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Jun 22 20:55:09 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
Jun 22 20:55:15 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Jun 22 20:55:27 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
Jun 22 20:55:48 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Jun 22 20:55:50 localhost NetworkManager: <info>  Device 'eth0' DHCP transaction took too long (>45s), stopping it.
Jun 22 20:55:50 localhost NetworkManager: <info>  eth0: canceled DHCP transaction, dhcp client pid 3682
Jun 22 20:55:50 localhost NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) scheduled...
Jun 22 20:55:50 localhost NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) started...
Jun 22 20:55:50 localhost NetworkManager: <info>  (eth0): device state change: 7 -> 9
Jun 22 20:55:50 localhost NetworkManager: <info>  Marking connection 'System eth0' invalid.
Jun 22 20:55:50 localhost NetworkManager: <info>  Activation (eth0) failed.
Jun 22 20:55:50 localhost NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) complete.
Jun 22 20:55:50 localhost NetworkManager: <info>  (eth0): device state change: 9 -> 3
Jun 22 20:55:50 localhost NetworkManager: <info>  (eth0): deactivating device (reason: 0).
Jun 22 20:55:50 localhost NetworkManager: <info>  Policy set 'Auto Belkin_G' (wlan0) as default for routing and DNS.

Expected results: a 'Wired Network' connection.

NetworkManager 'Wired Network' worked fine when I used it to install and update Fedora 11 a few days after it was released.