Flash compensation problem on K200D

I have an issue with my K200D when using either integral or hotshoe flash where after dialling in negative flash compensation the camera will not revert back when dialling back to zero compensation, the photos remain under exposed due to lack of flash even though compensation value now reads 0.0. After approx 10 or more photos the camera fixes itself. Checked ALL other settings between photos and nothing has changed except the flash compensation figure.
Any one else experienced this problem or know of a fix.