I tried to install SL6 x86_64 on a system already successfully running 64 -bit Fedora 13, error happens soon after bootup, before reaching any user interaction rel ated to the installer. Computer is Intel Xeon dual quad-core SuperMicro. No (easy) way to get screenshot, photograph available temporarily at: http://www.gg411.com/IMG_20110220_224246.jpg. Oops, now I see I can atta ch a file, I'll attach a photo of the error ... Error shows a Python stack trace with this stack (partial info only): * /usr/bin/anaconda * /usr/lib/anaconda/instdata.py, __init__ * /usr/lib/anaconda/instdata.py, reset * /usr/lib/anaconda/network.py, __init__ * /usr/lib/anaconda/isys.py, getDeviceProperties * /usr/lib/python2.6/site-packages/dbus/proxies.py, __call__ * /usr/lib/python2.6/site-packages/dbus/proxies.py, __call__ (again) * /usr/lib/python2.6/site-packages/dbux/connections.py, call_blocking * something about "interface 'org.freedesktop.NetworkManager' isn't e xposed (or may not exist), can't access property 'Interface'" I can get more info about computer from current Fedora-13 installation (e .g., "cat /proc/cpuinfo" or "cat /proc/net/...."), let me know what might help. I'm not sure whet her this is a RHEL6 issue or specifically an SL6 issue. --- Would like info on workarounds as well.