Hi Kev Apple Discussion thread suggests a Mobile Me cause. May give you a pointer.
https://discussions.apple.com/thread/2547052 Cheers Alan On 07/04/2012, at 5:51 AM, Kevin Lock wrote: Two icons in my dock (Firefox and Thunderbird) regularly shift position in the dock and sometimes completely disappear. These icons are the most commonly used, but I can see no reason for them to move by themselves. Any ideas for me? Regards, Kev -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>