pidgin lwqq error

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Dear all:
         Today, I install the pidgin lwqq in my computer . The system is ORZIN 6.0 which is base on ubuntu 13.04 32bit.
 I have some qq counts, all of them are work well ,except this one which  number is 170019606, I am sure that I had right count number and  password , 
          I used debug process, the imformation is follow:
09:01:21) account: Connecting to account 170019606.
(09:01:21) connection: Connecting. gc = 0xb9708b40
(09:01:22) connection: Connection error on 0xb9708b40 (reason: 0 description: Wrong username or password)
(09:01:22) account: Disconnecting account 170019606 (0xb9875418)
(09:01:22) connection: Disconnecting connection 0xb9708b40
(09:01:22) connection: Destroying connection 0xb9708b40
(09:01:26) util: Writing file accounts.xml to directory /root/.purple
(09:01:26) util: Writing file /root/.purple/accounts.xml
(09:01:32) util: Writing file accounts.xml to directory /root/.purple
(09:01:32) util: Writing file /root/.purple/accounts.xml
(09:08:42) util: Writing file accounts.xml to directory /root/.purple
(09:08:42) util: Writing file /root/.purple/accounts.xml
(09:08:42) util: Writing file blist.xml to directory /root/.purple
(09:08:42) util: Writing file /root/.purple/blist.xml
 (09:08:43) prefs: /purple/savedstatus/default changed, scheduling save.
 
          when I used other count ,it work well. for exemple:
 (09:25:10) account: Connecting to account 2523801845.
(09:25:10) connection: Connecting. gc = 0xb98d09c0
(09:25:11) util: Writing file accounts.xml to directory /root/.purple
(09:25:11) util: Writing file /root/.purple/accounts.xml
(09:25:14) util: Writing file /root/.purple/icons/1cc544b0e76dab38ca6bb2fa6e1015c60084fdde.jpg
(09:25:15) pidgin-libnotify: event_connection_throttle() called
 
           I had been tried to find the answer from the websites,  but I  couldn't find the way to fix this problem. So I ask for your help.
 I hope to receive your reply as soon as possible.
           Good day!
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