I have downloaded and install fastri from the tarball. Works fine and I qri eventhough it is slower than fri ... reason I don't to keep the fastri-server window reduced or otherwise. Fastri-server does seem to have problem with some gem packages. Here's the scenario I gem install the watir then I execute fastri-server -B so that fri and qri know about watir. c:\ruby>gem install watir Bulk updating Gem source index for: http://gems.rubyforge.org Successfully installed watir-1.4.1 Installing ri documentation for watir-1.4.1... Installing RDoc documentation for watir-1.4.1... c:\ruby>fastri-server -B -- snip -- Indexing RI docs for tidy version 1.1.2. Indexing RI docs for watir version 1.4.1. -- snip -- C:/ruby/bin/fastri-server.rb:71: Now the above result does not look good but is not alarming Continuing the scenario .... I uninstall another gem and the run fastri-server -B c:\ruby>gem uninstall tidy Successfully uninstalled tidy version 1.1.2 c:\ruby>fastri-server -B -- snip -- Indexing RI docs for test-spec version 0.3.0. Indexing RI docs for watir version 1.4.1. -- snip -- C:/ruby/bin/fastri-server.rb:71: [BUG] Segmentation fault ruby 1.8.5 (2006-12-25) [i386-mswin32] This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Now that is alarming response!!!! If I now uninstall watir then fastri-server -B completes without any problem. Please note that watir is not the only gem that fastri-ri has problem with...right now I cannot remember which gem.