When attempting to start emacs from lxterminal, emacs does not start and the terminal displays the message, "Arithmetic error". In addition, the same error is present when launching emacs from an xterm.
Stopping lxde (sudo /etc/initi.d/lxdm stop) and issuing the same from the command line successfully launches emacs.
Ubuntu 10.04 Server (x86). Kernel 2.6.32-24-generic-pae. Fully patched as of the date of report (17-Feb-2011).