Send button doesn't work

[colgate at cultura.com.br]

The Jabber client from Jabber.com now let me type on the message boxes with 
wine0505, but when I press ENTER or click SEND it does nothing, the text just 
stays there and the person who I'm typing to receives nothing... 
 
I tried the DLLs below in native, but no luck either: 
commdlg, comdlg32, comctl32, crtdll, shell 
 
Any idea? I don't get any error on the console :(