I’m also having a problem with timezones; Using WordPress 2.8, PHP 5.2.8, Amr 2.3.8.
When I select America/New York as WP Timezone, Amr plugin reports correctly America/New York as timezone;
iCal Timezone is set to Americas/New York and individual events are set to Americas/New York; however amr iCal Events List reports all events 3 hours early (8pm becomes 5pm).