Yep.
I have two installations on two different servers.
On one, hitting activate causes a blank screen, on the other, I get:
Warning: in_array(): Wrong datatype for second argument in /path-to-html/www/blog/wp-admin/plugins.php on line 90
Warning: in_array(): Wrong datatype for second argument in /path-to-html/www/blog/wp-admin/plugins.php on line 90
Warning: in_array(): Wrong datatype for second argument in /path-to-html/www/blog/wp-admin/plugins.php on line 90
and then when you try to activate any plug-in you get:
Warning: in_array(): Wrong datatype for second argument in /path-to-html/www/blog/wp-admin/plugins.php on line 9
Fatal error: [] operator not supported for strings in /path-to-html/www/blog/wp-admin/plugins.php on line 10