ath9k driver does not work with Linksys WMP300N WLAN adapter

[Gepardi]

1) LMDE Gnome 32-bit 201109
2) Plug in my Linksys WMP300N PCI card. I tried with already installed LMDE Gnome and also tried to make clean install for LMDE Gnome 201109 with same results: OS recognizes the card and even find my SSID with WEP encryption. But it keeps asking my WEP key over and over again and I'll never get Internet access.
3) WEP key will be asked three times and then WLAN connection is disconnected.
4) Should accept my correct WEP key and establish WLAN connection.
5) This happens always.

According to page, my card should be supported by ath9k driver: http://wiki.debian.org/ath9k

Attached messages, dmesg, lspci and lsmod outputs.

BR
Sami