When copy/pasting text into the console and using putty, realterm or minicom, some characters can be lost. This seems to occur irrespective of the baudrate and occurs when when XON/XOFF is used.

The only console application that does not appear to be affected by this behaviour is Microsoft HyperTerminal on Windows.

This results from executing uncached code from flash, which is a very slow medium. As soon as XIP (Execute in Place) cache is setup, and cache remains enabled, the problem disappears.