(UPDATED SUMMARY) Here's the report (PDF): http://intelligence.house.gov/sites/intelligence.house.gov/files/documents/declasspart4.pdf
Below the break is a deleted comment from Reddit in the /r/politics thread. They deleted it right as it was going to the top, btw. It broke no rules of the subreddit's moderation policy.
Edit: FIRST TWO SENTENCES:
"While in the United States, some of the September 11 hijackers were in contact with, and received support from, individuals who may be connected to the Saudi Government. There is information, Primarily from FBI sources, that at least two of those individuals were alleged by some to be Saudi Intelligence officers."
Edit: Holy shit it gets spicier, I will edit as I read:
Key findings:
A Saudi intelligence agent named Omar al-Bayoumi provided "substantial assistance" to the hijackers and met them inside of the Saudi consulate.
al-Bayoumi received payments from companies that had ties to bin Laden and al Qaeda.
Another alleged Saudi intelligence agent named Osama Bassman also gave direct aid to hijackers and worked with Bayoumi.
Bassman received money and possibly a fake passport from the Saudi government.
Bassman received assistance from the Saudi ambassador to the US.
Bassman was given a "significant amount of cash" a member of the Saudi Royal family in 2002.
Bassman is a known supporter of bin Laden, and has direct ties to other jihadist groups such as Eritrean Islamic Jihad.
An "accredited diplomat" named Shaykh al-Thumary was in contact with the hijackers. al-Thumary is a Shaykh at an anti-American mosque frequently attended by Saudi government employees at the consulate in Los Angeles.
A Saudi Interior Ministry official named Saleh Al Hussayen met with one of the hijackers in September, 2001.
One of Osama's half-brothers, a man named Abdullah Bin Laden, worked for the Saudi Embassy and has ties to Mohammad Atta and Marwan al-Shehhi, two of the hijackers. Atta is considered to be the ringleader of the hijackers.
Saudi government money was funneled through a mosque in California known as the Ibn Taymiyyah Mosque. (Note that Ibn Taymiyyah is a 12th century Islamic scholar who is considered one of the forefathers of jihadist thought.) The FBI believes that money was laundered to organizations affiliated with Osama bin Laden.
A Saudi named [redacted] with close ties to the Royal Family was involved in figuring out how to infiltrate individuals into the US.
A Senior al Qaeda operative captured in Pakistan is linked to Prince Bandar, the contemporary Saudi Ambassador to the United States.
A member of the Saudi intelligence service conducted a "dry run" hijacking in 1999.
The CIA separately found that the Saudi Government was funding and aiding al Qaeda members in the United States.
The Saudi intelligence agent al-Bayoumi let the hijackers stay in his apartment and helped them find housing in the United States.
al-Bayoumi co-signed their lease and paid their rent and security deposit (reminder - Bayoumi was being paid by both Saudi Intelligence and bin Laden)
al Bayoumi threw a party for two of the hijackers, provided them with a translator, and helped them get into flight school.
al Bayoumi had "extensive ties" to the Saudi Government. He was frequently in contact with the Emir at the Saudi Ministry of Defense, received funding, had his college paid for by the government, and was paid a monthly salary by the Ministry of Defense through September 11.
al Bayoumi made over 100 phone calls to Saudi Government establishments including three frequent contacts at the Saudi Embassy in DC (remember that Ambassador Bandar had ties to that senior AQ operative in Pakistan?). He also had contacts at the Saudi consulate in London.
Two CIA agents testified that al Bayoumi was a Saudi Intelligence operative.
An FBI agent testified that Bayoumi was a Saudi Intelligence operative.
While noting that [redacted], the FBI formally said that there is no evidence to tie him to Saudi intelligence.
Another summary:
It seems they (terrorists) did indeed have several members with ties to the Saudi gov't.
Several mentions of Saudi gov't support of terrorism through charitable orgs.
Saudi Naval officers confirmed to be in touch with hijackers on at least 9 occasions.
Pages 440 and 441 would be juicy if they weren't so effing redacted. They appear to cover more direct connections between terrorists and the Saudi gov't.
The Saudis were not perceived as terrorist threats prior to 9/11 - nor investigated as such. Confirmed by several intel sources that Saudis were not viewed as a threat or a terrorist-supportive/sponsoring country.
Saudis were uncooperative in investigations.
Bin Laden had good relations with gov officials and approved of their handling of situations. Money exchanged hands between Saudi gov. ops and Bin Laden/Al quaeda backed companies.
Page 442 - FBI testimony directly asserting Saudi royal family sponsoring terrorism.