Citrix client on Linux
To install the Citrix client on Linux download the version from Kaj's links on the citrixweb interface.
Unpack the tar-ball in a temporary directory.
Change to citrix directory and execute the setupwfg file.
Find ThawteRoot.crt file on another installation and drop it in ~/ICAClient/linuxx86/keystore/cacerts if that's where the client software was installed (the default path).
yum install openmotif as root
On 64 bit Centos also install libXaw.i386