I haven’t wrote about this, but i am almost 100% a ubuntu user 
and have been working on ubuntu 8 and now the new 9 version for about 2 months now. And i got to say i am really happy about this move.
But there is one thing i miss from Windows and that is TortoiseSVN, and although i have tried a lot of unix SVN clients none of the seem to really do the trick for me. They all seem to lack some functionality or another.
I know they big boys like to do all from the terminal command, but i am still a bash-fu wannabe so i still use GUI 
.
After a lot of self pity and frustration when i tried to do some SVN operations, and a bit of googling and browsing i stumbled upon Nautilus SVN and i was sold.
NautilusSvn is a Python extension for Nautilus which integrates a load of Subversion functionality into the GNOME Nautilus file manager, basically as a clone of the TortoiseSVN project on Windows.
Although still in Beta, it seems to have all the funcionality of TortoiseSVN and a good integration with Nautilus. Haven’t run into any bugs so far, so all is good .
Hope you like this as much as i did.
Cheers.