Comment 1 for bug 595264

This bug affects myself and a few friends using 10.04 Lucid and wicd 1.70.
I have tried a number of USB dongles all producing the same results.

Edimax EW-7711 Uan which uses the RT2870 chipset.
Azurewave AW-GU210 which uses the 8187 chipset.
Micronet SP907GK which also uses the 8187 chipset.

On re-boot, they connect fine to the LAST WIRELESS network, but when I try to switch to another network, whether encrypted or open, I get the unable to obtain IP address error. Using 'ifconfig wlanX down then up I eventually connect.

A point to note is that after disconnecting from a network and then attempting to connect to another one I see that it tries to obtain the IP from the last one I was connected to;

EG:

LAST connection was SKY1234 ( open or not )
NEW connection attempt to Belking54g ( open or not )

I see
'disconnecting active connections'
'SKY1234: obtaining IP address'

This then usually fails until I ifconfig DOWN then Up.

However, on a good day when the planets have aligned I can change connections quite often.

I agree that we need to have a complete flush of cache's etc when we attempt to change networks.