Revealing mistake: During the scene at the restaurant in Montenegro (actually filmed in the Czech Republic) you see a payphone with a Czech Telecom logo on it (itself a piece of history as these are all now rebranded O2). (01:57:50)
Revealing mistake: Near the end of the movie when Bond shoots Mr. White in the leg, you can see that Mr. White is wearing knee-pads under his pants. (02:14:00)
Revealing mistake: When Bond tries to rescue Vesper from the sunken elevator you can see the stripes from the diving equipment on Vesper's face. (02:08:50)
Revealing mistake: When Bond is chasing the terrorist through the construction site, a large pile of black pipes fall from the building. While they are falling and as they hit the ground they make all kinds of metallic clanging sounds, but when they hit the ground, you can see that they are really plastic PVC pipes, as several of the pipe ends break off and small pieces fly off them.
Revealing mistake: When Bond is running up the crane to catch up with the bomb maker at the construction site there is traction tape, to help Daniel Craig keep his footing on the smooth metal surface, visible on the crane. It wasn't put there as though for the construction crew's use because it is only placed on the part of the crane that we actually see Bond running on.
Revealing mistake: Bond has just stormed the embassy and taken the bomb maker as a hostage. As they walk down a hallway, the bomb maker is shot in the leg. The squib that is planted under his trouser leg is outlined.
Revealing mistake: When Bond is chasing Le Chiffre and Vesper in his Aston Martin, the shot pans as he drives round a corner from right to left. The sequence cuts to a slightly different camera angle where Bond appears to be driving around a different corner, but if you look closely it is the same corner as the previous shot, with Bond simply driving in the opposite direction, i.e. from left to right. (01:46:35)