Disable ipv6 in chrome ?

I think this page will help you out. Have a look at it.

http://www.google.com/support/forum/p/Chrome/thread?tid=1f5ce4162869dbf3&hl=en

Windows XP: Start->Run->cmd /k ipv6 uninstall


Unlike Windows XP, IPv6 in Windows Vista cannot be uninstalled. 

To disable IPv6 on a specific connection, you can go to the Network Connections 
folder, obtain properties of the connection and clear the check box next to the 
Internet Protocol version 6 (TCP/IPv6) component in the list. This method disables 
IPv6 on your LAN interfaces and connections, but does not disable IPv6 on tunnel 
interfaces or the IPv6 loopback interface.

To selectively disable IPv6 components and configure behaviors for IPv6 in 
Windows Vista, create and configure the following registry value (DWORD type)

1. Launch Control Panel, switch to "Large icons", and then select "Network and Sharing Center".
    
2. Click "Change adapter settings" option on the left navigation pane.
    
3. Right click on the network connection, select "Properties".
    
4. Uncheck "Internet Protocol Version 6".