A search of their site for the last 30 days reveals:
2092 hits for President Clinton
3248 for Mr. Clinton (not necessarily all Bubba)
2106 for President Bush
3286 for Mr. Bush (not all GWB, they probably call the governor and ex president Mr. too)
Just think, the NYT managed to mention the President 14 more times in the last month than the ex-pres.
Just honest reporting.