Plenty of new fixes and improvements to the LaTeX exporter in 1.5, see:
http://extensions.xwiki.org/xwiki/bin/view/Extension/LaTeX/#H1.5
What we need now is more users of it, who try it out and report jira issues at http://jira.xwiki.org/browse/LATEX
Please help out!
And let us know how you like it!
Thanks