more crash dumps: http://rapidshare.com/share/7F322CF10F53DF1A329816BDEBF32C3C

Have uninstalled arma and deleted all related folders, re-installed and re tried - no improvement, actually worse.
installed more ram, turned off crossfire, reset graphics settings to factory, which improved fps but has not improved crash issue.
used "shift - campaign" and tried other campaign missions and found same issue present.
campaigns are unplayable.