My Toshiba Satellite Pro L300 PSLB1E VISTA BUSINESS drops the wifi connection in 4 or 5 minutes after the computer has started. This thing just started a few weeks ago, it worked always fine. After searching the Internet for simular problems i replaced the driver realtek rtl8187b. Power Saving on networkcard is set OFF.
If you switch modus "powersaving" in Devicemanager/Realtek from CAM to FAST_PSP or MAX_PSP the networkcard is working for another 5 minutes. I even reinstalled Vista but the problem is still there.
It is not a router problem, i cheked it with 3 different brands. The bios is the latest version for this machine.
Other Toshiba notebooks that i have are working fine here. Any suggestions are welcome, i am considering a downgrade to XPPRO, i believe there is a conflict between the realtekdriver and vista.