Remove _drupal_bootstrap() from hook_init

is _drupal_bootstrap still needed in hook_init or is this a reminiscence from drupal 5?

its causing me issues with subpath_alias where the module isnt working properly and subaliases arent shown, this is because _drupal_bootstrap is called twice on a page load, the last time its called from this module, and it doesnt pass the proper parameters
this page http://api.drupal.org/api/function/hook_init/6 says "when this hook is called, all modules are already loaded in memory.", so path should be available on D6
i understand from this issue http://drupal.org/node/51921 that its because of cached pages
ive tried with caching enabled on a node page, its still called twice, and commenting the line in path_access didnt have any side effects (php errors)

can anyone test this and report?

subpath_alias might be just one module affected by this, i think its a problem with custom_url_rewrite_inbound/outbound and modules implementing them