I can confirm this bug on Jaunty (9.04); it was not present in Hardy (8.04).
There is a fix for this on the debian-bugs-list:
http://<email address hidden>/msg631117.html
I have applied that fix to my system and mathematical symbols are now produced correctly with XeLaTeX.
In brief, edit the configuration file: /etc/texmf/dvipdfm/dvipdfmx.cfg
Comment the line "f pdftex.map" by adding a percent symbol at the beginning of the line.
Uncomment the line "f dvipdfm.map" by removing the percent symbol.
Save and run xelatex again.
I can confirm this bug on Jaunty (9.04); it was not present in Hardy (8.04).
There is a fix for this on the debian-bugs-list: /msg631117. html
http://<email address hidden>
I have applied that fix to my system and mathematical symbols are now produced correctly with XeLaTeX.
In brief, edit the configuration file: /etc/texmf/ dvipdfm/ dvipdfmx. cfg
Comment the line "f pdftex.map" by adding a percent symbol at the beginning of the line.
Uncomment the line "f dvipdfm.map" by removing the percent symbol.
Save and run xelatex again.