Version:            (using Devel)
Installed from:    Compiled sources
OS:                Linux

Using kopete from KDE 3.5, revision 770604, I get a crash when I chose
Settings | Configure | Accounts | New -> Gadu-Gadu -> Register New Account

Here is the full backtrace:

System configuration startup check disabled.

[?1034hUsing host libthread_db library "/lib64/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0x2b87ae0f97e0 (LWP 22510)]
[KCrash handler]
#5  0x00002b87ade25bb0 in strlen () from /lib64/libc.so.6
#6  0x00002b87addf584d in vfprintf () from /lib64/libc.so.6
#7  0x00002b87ade17e7a in vsnprintf () from /lib64/libc.so.6
#8  0x00002aaaab87f06f in gg_vsaprintf (
    format=0x2aaaab8979c9 "%s %s HTTP/1.0\r\n%s", ap=0x7fff05b988d0)
    at /root/svn/kdenetwork/kopete/protocols/gadu/libgadu/common.c:150
#9  0x00002aaaab87f15c in gg_saprintf (
    format=0x2aaaab8979c9 "%s %s HTTP/1.0\r\n%s")
    at /root/svn/kdenetwork/kopete/protocols/gadu/libgadu/common.c:175
#10 0x00002aaaab887c9d in gg_http_connect (
    hostname=0x2aaaab899067 "register.gadu-gadu.pl", port=80, async=1, 
    method=0x2aaaab899062 "POST", path=0x2aaaab8996df "/appsvc/regtoken.asp", 
    header=0x2aaaab899640 "Host: register.gadu-gadu.pl\r\nContent-Type: application/x-www-form-urlencoded\r\nUser-Agent: Mozilla/4.7 [en] (Win98; I)\r\nContent-Length: 0\r\nPragma: no-cache\r\n\r\n")
    at /root/svn/kdenetwork/kopete/protocols/gadu/libgadu/http.c:90
#11 0x00002aaaab88dd15 in gg_token (async=1)
    at /root/svn/kdenetwork/kopete/protocols/gadu/libgadu/pubdir.c:503
#12 0x00002aaaab849a3f in RegisterCommand::requestToken (this=0xc6f780)
    at /root/svn/kdenetwork/kopete/protocols/gadu/gaducommands.cpp:145
#13 0x00002aaaab86277a in GaduRegisterAccount (this=0xc14ce0, parent=0x0, 
    name=0x2aaaab88eb9e "Register account dialog")
    at /root/svn/kdenetwork/kopete/protocols/gadu/gaduregisteraccount.cpp:68
#14 0x00002aaaab84ada2 in GaduEditAccount::registerNewAccount (this=0xbeda40)
    at /root/svn/kdenetwork/kopete/protocols/gadu/gadueditaccount.cpp:182
#15 0x00002aaaab84b2f6 in GaduEditAccount::qt_invoke (this=0xbeda40, _id=47, 
    _o=0x7fff05b98cd0)
    at /root/svn/kdenetwork/kopete/protocols/gadu/gadueditaccount.moc:98
#16 0x00002b87aa24ee6c in QObject::activate_signal ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#17 0x00002b87aa24f604 in QObject::activate_signal ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#18 0x00002b87aa280592 in QWidget::event ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#19 0x00002b87aa1f86dd in QApplication::internalNotify ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#20 0x00002b87aa1f95f2 in QApplication::notify ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#21 0x00002b87a8f513dd in KApplication::notify ()
   from /opt/kde3/lib64/libkdecore.so.4
#22 0x00002b87aa1a0503 in QETWidget::translateMouseEvent ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#23 0x00002b87aa19f445 in QApplication::x11ProcessEvent ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#24 0x00002b87aa1ae7b2 in QEventLoop::processEvents ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#25 0x00002b87aa20cf53 in QEventLoop::enterLoop ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#26 0x00002b87aa20ce02 in QEventLoop::exec ()
   from /usr/lib/qt3/lib64/libqt-mt.so.3
#27 0x00000000004380dc in main (argc=7, argv=0x7fff05b999d8)
    at /root/svn/kdenetwork/kopete/kopete/main.cpp:107