Oneiric - Linux 3.0.0-23-generic #39-Ubuntu SMP Thu Jul 19 19:19:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Had this problem using connected to SFTP server in nautilus, accidently made a drag operation and it stuck.
I don't and haven't used rapidsvn, but I did have gedit running and trying to open a rather large file.
I changed to tty1 and killed gedit, switched back and the drag operation stopped, able to click again without killing the session.
Oneiric - Linux 3.0.0-23-generic #39-Ubuntu SMP Thu Jul 19 19:19:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Had this problem using connected to SFTP server in nautilus, accidently made a drag operation and it stuck.
I don't and haven't used rapidsvn, but I did have gedit running and trying to open a rather large file.
I changed to tty1 and killed gedit, switched back and the drag operation stopped, able to click again without killing the session.