Bus Error while rpm install

[debu]

Folks,I have two doubts :(1) I am getting a BUS error while trying to install rpm packages. This servers had couple of  LVM reduce/extend on /var partiotion. I suspect this might have created this issue. Any idea, if I can get rid of it somehow? or anyother experience anyone has on this?(2) if a fully allowed Sudo user does bash$ sudo su; where does the command history resides/goes? Thanks,DK