same problem here

[old_any]

Ubuntu 9.10
Thunderbird 20.0.23
Webmail 1.3.3
Yahoo 1.4.6

</div>

06:13:38 PM--commd.js - callback - status :200

06:13:38 PM--HttpComms3.js - callback - checking for cookies

06:13:38 PM--HttpComms3.js - callback - no cookies found

06:13:38 PM--HttpComms3.js - callback - Checking for Bounce

06:13:38 PM--HttpComms3.js - clear - START

06:13:38 PM--HttpComms3.js - clear - END

06:13:38 PM--YahooPOPBETA.js - loginOnloadHandler - START

06:13:38 PM--YahooPOPBETA.js - loginOnloadHandler : Stage2

06:13:38 PM--nsYahoo.js - loginOnloadHandler - status : 200

06:13:38 PM--YahooPOPBETA.js - loginOnloadHandler - page check :
http://uk.mc343.mail.yahoo.com/mc/welcome?.gx=1&.tm=1258910017&.rand=
06:13:38 PM--YahooPOPBETA.js - loginOnloadHandler - logout not found

06:13:38 PM--YahooPOPBETA.js: loginHandler : Exception : Error.
Error message: error logging in
334

06:13:38 PM--YahooPOPBETA.js - serverComms msg -ERR negative vibes
from x...@yahoo.com

06:13:38 PM--YahooPOPBETA.js - serverComms sent count: 49 msg length:
49

06:13:38 PM--HttpComms3.js - callback - END

[Webmail Author]

Are you using the new interface