According to this alarming article El Chimpo Borracho is melting down completely:
The 43rd US President has always had a much-publicised knack for mangled syntax, but now George Bush often searches an agonisingly long time, sometimes in vain, for the right words. His mind simply blanks out at crucial times. He is prone, I am told, to foul-mouthed temper tantrums in the White House. His handlers now rarely allow him to speak an unscripted word in public.As opposed to 2000, when he was a little less manifestly unfit to be President.
A senior Republican, experienced and wise in the ways of Washington, told me last Friday that he does not necessarily accept that Bush is unstable, but what is clear, he added, is that he is now manifestly unfit to be President.