<div class="gmail_quote">On Tue, Oct 20, 2009 at 1:17 AM, steve <<a href="mailto:steve@lonetwin.net">steve@lonetwin.net</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hello Mark,</blockquote><div> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I think you might have (possibly inadvertently) messed up your python installation. Check the following: $ python --version # should show you Python 2.6 $ python -c "import sys; print sys.path" # This should show you the places that python would look for modules such as Popen. It ideally should include '/usr/lib/python2.6/' (and '/usr/lib64/python26 if you have a x86_64 box). $ echo $PYTHONPATH # This env variable is passed to python to modify the sys.path (mentioned above) at runtime. This should ideally not exist if you don't do any python development yourself. Let us know what you find, </blockquote></div> If I've messed up my python install, it certainly is inadvertent. I do use python, but I've checked my root history and I've not manually installed any python packages since I installed F11. The version is 2.6 To get a little cleaner list output, I ran python from root: <div style="margin-left: 40px; font-family: courier new,monospace;">Python 2.6 (r26:66714, Jun 8 2009, 16:07:26) [GCC 4.4.0 20090506 (Red Hat 4.4.0-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> for which in sys.path: ... print which ... /usr/lib/python26.zip /usr/lib/python2.6 /usr/lib/python2.6/plat-linux2 /usr/lib/python2.6/lib-tk /usr/lib/python2.6/lib-old /usr/lib/python2.6/lib-dynload /usr/lib/python2.6/site-packages /usr/lib/python2.6/site-packages/Numeric /usr/lib/python2.6/site-packages/PIL /usr/lib/python2.6/site-packages/gst-0.10 /usr/lib/python2.6/site-packages/gtk-2.0 </div> The PYTHONPATH environment variable is not set And, no, this is not a x86_64 box.