For those who are still looking for a nice SVN (cross-platform) stand-alone GUI: I found SmartSVN on
http://www.smartcvs.com/smartsvn. It's in Java but really fast an I believe it's pretty well done. There is a foundation version which is free of charge (if I got the license right) and does just fine with the Code::Blocks repository.
Regards, Morten.
Ps.: Please note that there is also TortoiseSVN, RapidSVN and others...