Email me about replies to this article - causes error messages

This is similar to a previous thread I started but was not titled accurately and the problem not clearly defined.

    * warning: strtr() [function.strtr]: The second argument is not an array. in /mounted-storage/.../drupal-6.2/modules/syslog/syslog.module on line 108.
    * warning: syslog() expects parameter 1 to be long, string given in /mounted-storage/.../drupal-6.2/modules/syslog/syslog.module on line 81.

I keep getting the above error messages and I've narrowed down the problem to the Email me about all replies to this article aspect of comment saving/updating.

For testing I created a new forum topic. Logged in as user A - I created a comment/reply to the topic making sure the 'Email me about replies to this article' was unchecked. I saved the comment and no error messages. As same user, created another comment/reply, making sure the 'Email me....' was unchecked and again no error message. I logged in as User B, created another comment/reply, making sure 'Email me...' was unchecked and again no error messages. I did this numerous times and logging in as different users, no error messages.

As soon as I saved a comment/reply with 'Email me....' turned on the above error messages appeared. At this point on, whether 'Email me...' is turned on or not, error messages appear for all future comments when saved/updated.

When 'Email me...' feature is turned on, I do in fact receive the email, it appears that it's purely a logging system stuff-up.

Surely others must be experiencing this.

Any clues.

Steve
Prime 357