Recently due to some problems, I reinstalled fedora16_64 & updated directly to latest kernel.
I am using citrix for some of departmental work (I am working for gov.) wherein file launch.ica is to be opened by wfica (/opt/citrix/icaclient/wfica) which is provided by package ICAClient (From citrix website).
It was working smoothly before reinstall. It failed to work after reinstall. I got indication wherein lies failure when I tried to run wfica.sh. It gave error message that libasound.so.2, a shared library is not available. I tried to install said package which resulted in installation of Package alsa-lib-1.0.24-2.fc15.i686.
Thereafter it worked. so I am sharing this if it helps anybody.
Further virtualbox failed to start virtual machine added and gave error to run /etc/init.d/vboxdrv setup. It failed with message to look in log. log gave error to failure related to make,gcc (dkms was already installed). so I installed kernel-devel, kernel-headers, gcc.
Thereafter it worked.