In the realtor's office Maeby is seen drawing on the white board, which then all disappears in a later shot.
In the plane back to India Lindsay is using an iPhone 4(s). A few days later the real estate man says that it is 2006. In 2006 the iPhone wasn't even presented yet.
For several of Tobias' lines the audio sounds like David Cross rerecorded his dialogue in a concrete box. It echoes in a way that doesn't match the scene his character is in.