Strange cygwin shell pasting issue

Question

I'm running cygwin on Windows 7 and am seeing something really strange. In the cygwin bash shell, any command I run is run with the current copy of the Windows clipboard immediately appended.

For example, if I just copied a Windows path (e.g. c:\Users\foogit) to paste somewhere else, then opened a cygwin prompt and typed 'ls', it would try to run: lsC:Usersfoogit

which would, of course, cause problems.

I can work around it for now by always ending a command with a semicolon, so it tries to do that second part as its own command, but it's been rather frustrating. Any ideas?