bizzarely when I use the the up arrow to go back one command I often just get the command before the last one i.e. it sometimes skips the command I just did.... is there some intelligence that says 'do not put in history a command that did not work or has been repeated '......but then I use the 'history' command and the command I last did is not there...even though the command worked ?

I have only seen this on suse 10.1, csh (which is bash)....is there an option I can set ? ... I have looked around but nothing seems obvious I am using

SUSE Linux Enterprise Desktop 10 (x86_64) - Kernel \r (\l).

Thanks in advance