ruby 1.9.3 problem -- undefined symbol: UINT2FIX

[nikolas]

ruby-1.9.3-p0 :001 > require 'bdb'
LoadError: /home/nik/.rvm/gems/ruby-1.9.3-p0/gems/bdb-0.2.6.5/ext/bdb.so: undefined symbol: UINT2FIX - /home/nik/.rvm/gems/ruby-1.9.3-p0/gems/bdb-0.2.6.5/ext/bdb.so
from /home/nik/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:59:in require' from /home/nik/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:59:inrescue in require'
from /home/nik/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in require' from (irb):1 from /home/nik/.rvm/rubies/ruby-1.9.3-p0/bin/irb:16:in

'
ruby-1.9.3-p0 :002 >