Hi,
as stated in subject I wasn't able to compile sbnc 1.2 against openssl 1.0

Linux 2.6.35-gentoo-r4
OpenSSL 1.0.0b 16 Nov 2010

make fails here:
...
Core.cpp: In member function 'void CCore::StartMainLoop()':
Core.cpp:337: error: invalid conversion from 'const SSL_METHOD*' to 'SSL_METHOD*'
...
make[3]: *** [Core.lo] Error 1
...

edit: I have filled subject with prefix with sBNC 1.2 but the thread was shown as sBNC 1.3, therefore cleared prefix for clarification and updated post with version.

That issue has been fixed in 1.3b. For more information on the beta read the topic of #sbnc.beta on irc.quakenet.org.