Unresponsive chat box in game

[noms]

Well I formatted my C: and reinstalled Windows XP SP3, FA (downloaded from steam) then FAF.

I recently came across a new issue where my in game chat box is non responsive (cannot type anything). Previously never had this problem. At some point during a game I press ENTER to bring the chat box up but when I start typing nothing appears. Eventually it works again, then it stops working again etc. It seems to switch on and off at random intervals.

Update: Just tried reinstalling FA again and the chat box issue remains. This is now becoming even more annoying than the "lobby crash on player join" issue.

Maybe I should reinstall FA from the CD or do another fresh install of Windows.

Has anyone else had this issue and managed to resolve it?

[noms]

Confirmed issue is fixed after reinstalling windows and FAF!