i just bought galaxy ace and upgraded to 2.3.4 DDKQ6 whenever i use wifi at home it runs excellent at these settings.
Encryption Technique > TKIP
Authentication > WPA-PSK
Security Mode> WPA/WPA2-personal ( psk )
but in my office it shows high signals but doesn't run at all, my office router settings are
Encryption Technique > Automatic
Security Mode> OPEN
Note: both routers are same model TP-LINK TL-WR642G 108M
is there something wrong with encryption mode ?