circos-0.55, circos-tools-0.16 and circos-workstation-0.02 have been installed on fourierset fourierseq as of 2/4/11 by SPHS at /opt/
Circos executables are also in /usr/bin/local/genome/bin and should be in every fourierseq user's path.
Tutorial files for 0.55 matching the online tutorials are located in /opt/circos/circos-tutorials-0.55/
For more information about using Circos, check http://circos.ca/tutorials/lessons/