In a recent interview by Jamestown with Dr. al-Faqih (I referenced his analysis for the post Superpower Baiting), he makes a case for an attack on Saudi Arabia later this fall (and as anticipated by this author, on the oil installations):
There are reports by the Ministry of Interior that their agents had detected a sudden decrease in the "chatter" or communications of the Jihadi groups. They are worried that this sudden scaling down of activities signifies a new tactic by the Jihadis and could be the harbinger of more ominous things to come...
They might attack the oil installations for double effect. Firstly it reduces international confidence in the Saudi regime and secondly it has a significant global impact. This fulfils bin Laden's ambitions of sabotaging the American economy. Furthermore it is possible that they could change their mind and start targeting regime figures... I think they will not attack before Bush is re-elected in November. Al-Qaeda is praying for a Bush victory, because Bush is facilitating the polarization between the Muslim and Western worlds and he is causing more and more Muslims to hate America.