WordPress MU

I'm trying to set a theme after blog creation but switch_theme doesn't do anything. I use the wpmu_new_blog hook:

add_action ('wpmu_new_blog', 'wpmu_blogsetup');

function wpmu_blogsetup($blog_id) {
	global $wp_query, $wpdb;

	switch_to_blog($blog_id);

	switch_theme('ll-event', 'll-event');
	//update_blog_option($blog_id, 'template', 'll-event');
	//update_blog_option($blog_id, 'stylesheet', 'll-event');
	//delete_blog_option($blog_id, 'current_theme');

	echo 'blog_id: ' . $blog_id;
	echo 'get_template: ' . get_template();
	echo 'get_stylesheet: ' . get_stylesheet();
	echo 'get_current_theme: ' . get_current_theme();

	die(); //for debugging reasons...

}

I also tried setting the theme manually using update_blog_option. The theme is not set, the output:

blog_id: 42
get_template: default
get_stylesheet: default
get_current_theme: WordPress Default

What do I do wrong? When I set it with wp-admin it works.

Did some more Googling and this led to the solution:

http://wordpress.org/support/topic/373030?replies=14#post-1447768

Code:

switch_to_blog($blog_id);
update_blog_option($blog_id, 'template', 'loveland-event');
update_blog_option($blog_id, 'stylesheet', 'loveland-event');
delete_blog_option($blog_id, 'current_theme');
wp_cache_delete('template', 'options');
wp_cache_delete('stylesheet', 'options');

Yah, it seems like there's a bug in 2.9.2's switch theme code. Glad you found the solution.

both of these, switch_theme and svdv's solution, do absolutely nothing for me - for me the trick was adding the fourth parametre "true" to the update_blog_option calls to force refreshing *shrug*

None of the above works for me. Is this really a bug in 2.9.2? It seems like a pretty significant bug that could do with some fixing, or at least prominently visible work-arounds being available!