A family of Microsoft word processing software products for creating web, email, and print documents.
I have seen this complaint several times in this forum, especially with Windows 7, and (for good reason) it is usually dismissed as a problem relating to the touchpad, or to voice recognition software, but since purchasing a desktop PC with Windows 7, I find this is an increasing problem that occurs in all software involving typing - and I don't have a touchpad nor voice recognition software.
I thought that it might be attributable to clumsy typing, but I am less sure of that. My typing skills have not changed since getting Windows 7, and I have tried it with both a wired keyboard and a Wireless (Bluetooth) keyboard, both supplied by Microsoft and the effect is the same. Bluetooth is sometimes suggested as a cause but it occurred before installing the bluetooth dongle and occurs when the the dongle is removed.
I have become used to reviewing the text that I have typed to avoid this issue, but it seems to be a genuine problem not related to the hardware.
The same thing happens on my Windows 7 laptop. It did not occur with my Windows XP laptop and desktop (both now deceased).