sqlplus on linux, desc gives segmentation fault

sqlplus = 8.0.5, 8.1.5 or 8.1.6
[Quoted] OS = linux (hpux is ok)

set linesize 123
desc dual
...crashes the sqlplus-process with "segmentation fault". This seems to be a problem only for linesize 123! 122, 124, 222, 133 and lots of other values works fine. Whats the problem with 123? (Dual is just an example, same result for any table). Bug?

-- 
Kjetil Skotheim
kjetilskotheim_at_iname.com