SO, I have been using drush from past many years on an apache server and it has been working like charm. I have a multisite setup with Drupal and run around 100 subdomains. In my situation, I feel drush too easy to update certain things on the server for all subdomains.
Recently, we migrate our servers from apache to nginx(php-fpm) and also started using Pressflow instead of Drupal6. Since then I am unable to make any updates using drush on the subdomains. I run the drush command and it does not display any error, but also it does not do any updates on the subdomains. My server guy told me that drush is incompatible with php-fpm. IS that so?
Any ideas or solutions to make it working in a server running on nginx server and using Pressflow? If drush can't work, any links guiding how can I install a module on all subdomains using php would be great.