We've got a very odd problem that one of our users is experiencing. Every now and then when they are using Word XP the spellchecker switches over to French from English(UK). The user has check as you type enabled and they notice the problem when suddenly the bulk of the document is suddenly underlined in red.
Going into Spelling and Grammer confirms it as being Fench and when I check in Language setup for them it is showing as French also. I've checked in Regional Setting in Control Panel and it is showing Uk as it should and now seciond region or language is installed.