Hi,
last idea is the good one - had same problem on SCCS client.
There was a bug on Pentium IV with W2K, too, and which was giving the same problem, during the Sybase installation.
You had to change the JRE release to 1.1, in the Sybase subdirectory (after making a copy of the original directory on harddrive).
Hope it will help.
Good afternoon
PG