I know this isn't specific to THIS plug-in, but seems to be related to any plug-in I've used with captcha.
I can't get the plug-in to up date... I can't delete the plug in from the server because it won't release the use of ahg-bold.ttf.
Again, this isn't just because of this plug in. I had this exact same issue with another WP site and a totally different captcha plug-in using this font. The server will not let me delete it because it says it is being used.
I had this issue a few months ago and had to get the big boss to get on the server to kill it. Had it yesterday... had to ask the big boss again (who grumbed and grumbed).
Scared to ask the big boss to do it again today. :-\
Any clue as to WHY this is happening (we have windows with... arrr... IIS 6 I think but can look for sure).
BUUUUUT in the meanwhile the plug-in update didn't work, and now the plug-in is totally gone from my list of plug-ins in wordpress.