Hi. These are mostly bugs in the DecTalk firmware. I have had the sudden speed changes in both Windows and Linux. The problem where you start hearing quotes before a capital letter seems to be Linux-specific. I haven't narrowed it down for sure, but I suspect that it is in the speakupconf script. The way I've fixed it when it happened to me was to modify the caps_start and caps_stop files. Simply remove all the quotes from the beginning and end of the strings.
