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Here are the symptoms of the problem: the Wi-Fi-enabled computer is working fine one minute, pulling up Web pages. Then, for no reason, the connection drops, websites fail to come up. The small wireless connection icon in the taskbar says the signal from the access point is strong, so the problem isn't that the user wandered out of radio range. The icon even shows that the computer's Wi-Fi hardware is sending information to the access point -- it's just not getting anything back. And manual attempts to re-establish the connection with the wireless configuration tool won't do the trick. Even more bizarre, the connection sometimes comes back on its own.
This is exactly what I get ! When I run a diagnose, it said something like "I can ping the [IP of wireless] but did not get any response".
A temporary solution would be to disactivate the Wireless Zero Configuration in the services panel.
Did you had the same issue ? Did you find a fix ?
Wireless Zero Configuration Reference [msdn.microsoft.com] (May need subscription to view)
[The Wireless Zero Configuration programming interface is available for use in Windows XP Service Pack 2 (SP2). In Windows Vista and Windows Server 2008, these APIs are not supported. The Native Wifi API provides similar functionality in Windows XP Service Pack 3 (SP3) and later versions of the operating system. Wireless LAN API for Windows XP Service Pack 2 (SP2) provides similar functionality for Windows XP SP2. For more information, see About the Native Wifi API. Use the Native Wifi API whenever possible.]
Vista uses something called Native Wifi to accomplish the same.
Have you tried using the software included from Toshiba?
I found some issues and workaround. Thanks for the info about Native Wifi API.
After intensive searches, I realised that many factors are and it is most presumably a compatibility issue (driver, network adapter, compatibilty between the capacities of the router and the network adapter, etc.)
Anyway, I need to check the following
1 - Always use "Maximum Performance Mode" when on battery (http://support.microsoft.com/kb/928152) -
2 - Is it a lag issues ? Ping and check for any lag issue and if there is any, install the Vista Anti-Lag
3 - More stuff like compatibility issue and TCP autotuning (http://windowshelp.microsoft.com/Windows/en-US/Help/33307acf-0698-41ba-b014-ea0a2eb8d0a81033.mspx)
4 - Redoing the IPv4 configurations and disabling v6 & QoS could be a solution
5 - Checking the LAN configuration (802.11 a/b/g, b/g, etc.)
Will have to get full details of my wireless router and go in specific forum - Vista + Toshiba - to get the solution.