pidgin through proxy

[Tomas Alberto Ramirez Andujar]

Hi,
Is there a special setting i might need to connect to a jabber server
using http proxy auth in pidgin?

I am unable to connec to a jabber server, the message i get is : 

Lost connectionwith server: Connection reset by perr and Server closed
the connection. 

Here's my accounts.xml

---
<account>
<protocol>prpl-jabber</protocol>
<name>tomas.ramirez at rimed.cu/Department-Center</name>
<password>NNNNNNNNN</password>
<alias>Tommie</alias>
<statuses>
<status type='available' name='Available' active='true'>
<attributes/>
</status>
<status type='mood' name='Feeling' active='false'>
<attributes/>
</status>
<status type='freeforchat' name='Chatty' active='false'>
<attributes/>
</status>
<status type='away' name='Away' active='false'>
<attributes/>
</status>
<status type='extended_away' name='Extended away' active='false'>
<attributes/>
</status>
<status type='dnd' name='Do Not Disturb' active='false'>
<attributes/>
</status>
<status type='offline' name='Offline' active='false'>
<attributes/>
</status>
</statuses>

<settings>
<setting name='check-mail' type='bool'>1</setting>
<setting name='buddy_icon'
type='string'>2408336f7f97679dbcfc02f7a74af0702fcf34b4.png</setting>
<setting name='buddy_icon_timestamp' type='int'>1292593298</setting>
<setting name='connect_server' type='string'>rimed.cu</setting>
<setting name='bosh_url' type='string'></setting>
<setting name='old_ssl' type='bool'>0</setting>
<setting name='auth_plain_in_clear' type='bool'>1</setting>
<setting name='require_tls' type='bool'>1</setting>
<setting name='ft_proxies' type='string'>proxy.eu.jabber.org</setting>
<setting name='use-global-buddyicon' type='bool'>0</setting>
<setting name='custom_smileys' type='bool'>1</setting>
<setting name='port' type='int'>5222</setting>
</settings>
<settings ui='gtk-gaim'>
<setting name='auto-login' type='bool'>1</setting>
</settings>
<proxy>
<type>http</type>
<host>local.cm.rimed.cu</host>
<port>3128</port>
<username>tramirez</username>
<password>NNNNNNNNNNNN</password>
</proxy>
<current_error/>
</account>
---

Any suggestions.
Tommie
-- 
------
Tomas Alberto Ramirez-Andujar, MSC, PA
DESEDUC - Diseño de  Sistemas de Información
Universidad de Ciencias Pedagógicas José Martí
Camaguey - Cuba - Linux 269501 / Ubuntu 32743