FR's site is now working normally.
It was very very slow on Tuesday afternoon causing me to book 3 of the same flight thinking the system wasn't processing them.. They must think I'm a right idiot, I'm flying from London Stansted to Shannon, London Luton to Shannon and Liverpool to Shannon all in the space of 2 hours... Hmm!! I'll just use the Liverpool to Shannon one please!
Good job it was only 1p for my flight and £1 debit card fee!