Not reloading repositories is not bad - it just shows that your server does not have access to the configured plugin repositories. By default they are sitting on liferay.com, so it means that your server might not have internet access (or you've changed the default configuration) or have difficulties to resolve DNS.
As hinted in the previous answer: Make sure that you don't time out to any other resource that you need somewhere on the page, e.g. a portlet or during login (like the LDAP server given). Also: Keep in mind that timeouts to LDAP might be a result of not being able to resolve names (e.g. through DNS)
