Hi I noticed few small glitches with the new FC6t3: Installation was trouble free. But problems soon started popping up I was not able to set x resolution below 1200 x 1152 using the gui utility for display management. Was only fixed when I added the following code to my xorg.conf Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Samsung SyncMaster 793S/793V/CM173G" HorizSync 40.0 - 50.0 VertRefresh 80.0 - 120.0 Option "dpms" EndSection and the following subsection under screen SubSection "Display" Viewport 0 0 Depth 24 Modes "1024x768" EndSubSection 2. I was running xen dom0 with openoffice firefox thunderbird gnome-terminal when my x froze. all the windows on my x froze. I was still able to drag the mouse all over the desktop, nothing else. one more thing, I had used "xm mem-set 0 244" for freeing up some memory for a virtual maching a few minutes before x faulted 3. Yum hung up a few times after it finishes reading the repository meta data for packages. But this problem always gets resolved by a reboot. 4. K3b was not working giving out errors like can not annonmously mmap resource busy. Later I came to know that It has nothing to do with FC6. New kernels in the 2.6.x series doen't allow priviledged user to lock large memory resources. that broke growisofs. I tried searching on google and found two solutions to this Run the following command in bash "ulimit -l unlimited" and restart k3b. This one didnt work for me. I am not sure if it will work for anyone else. go to settings --> configure k3b --> programs and put the following arguments to growisofs -use-the-force-luke=bufsize:16m This one worked for me. Rest is cool untill now. Infact a lot of things are better than previous releases. Cheers ! Pritam Ghanghas