If you’re using Microsoft’s Vista operating system and you’re signed into chat, there’s a good chance you’re seeing a high percentage of key strokes disappear while composing or chatting. This makes something like "all good dogs go to heaven" look like "al gddog goto een". Yurck!

We’ve noticed this too, and our next release fixes it!

But until that change gets rolled out, signing out of chat makes the problem go away. Here’s how:

See the smiley face next to your user name at the top of the Mail page? Click it – then, in the pull-down menu, click Sign out of chat.

Since Mail remembers your settings from session to session, you'll be signed out of chat until you change it.