I've tried to install this plugin several times. Once through WordPress - seems to create the plugin directory OK (called shareaholic), but whenever I try to activate the plugin, WordPress stalls - no error message.
I then downloaded the zip file and extracted it. This created a plugin folder called sexybookmarks - uploaded this to plugins folder and tried to activate, same error occurs.
At first I thought this was a WordPress issue, but I have been able to install and activate other plugins.
Can you think of any reason why the plugin won't activate?