I was a big fan of this plugin, especially the skyscraper options. Unfortunately over the past few months I noticed my site getting slower and slower until the past few weeks it just stopped loading all together throwing database errors and internal 500 errors.
Eventually fed up and frustrated I started bug hunting (after blaming my host) through out the site, and eventually when I started disabling plugins I came to my sociable plugin, and once deactivating my site loaded normally again, within seconds. I thought maybe it was a fluke, so I enabled socialable one more time and once again my site grinded to a halt.
I deactivated and the site was back to normal.