Hi,
Version 0.3 of logtails has been released and is available at http://rubyforge.org/frs/?group_id=500
The biggest change is the integration of a contribution from Richard Dale, which makes logtails use a lot more of the KDE infrastructure.
To benefit that fully, logtails needs to be installed with a ../configure, make, make install that installs a compiled wrapper. I haven't had the time to really master that part, so I hope Richard is around in case of questions about it 
However, I also made Logtails available as a pure Ruby version where you simply decompress the archive and run the src/main.rb script.
The app is doing its jobs fine. I still need to put the finishing touches, and add much needed side features (saving a tab's content and configuration options), but I wanted to get this release out now.
Changes:
- tabs can be closed, though it's not perfect (I don't think the content of the tab is correctly removed)
- highlighting of the patterns entered in "Accepted lines"
- More use of KDE technologies as DCOP (Richard Dale)
- Available as a Kdevelop project (Richard Dale)
- background is black, and font used is Console 12
The summary page on Rubyforge is at http://rubyforge.org/projects/logtails/
Raph