... How many activities are listed in your activities view?
I remember seeing all the activities since I started using my Forerunner 405CX from last year. A few days ago, I wanted to take a look at an activity about a year old only to realize that it was no longer listed in the activities view. Interesting thing is that I can see the summary of the activities from all the dates from the report view. It appears that some changes have been made to the UI recently and now the activities view shows only the last 180 activities although the ones older are stored somewhere in the database. Is there a way to see those somehow? How many activities are listed in your activities view?
I can see all 753 of mine.
One guess could be that you never rename your activities from the default "Untitled"? There has been other cases like yours where this was apparently the cause.
What is the oldest date that you see? I can see 410 activities, back to April 2010 when I started uploading data.
A few months ago, I did notice that GPS data had been stripped from some of my older files. When that happened only the activities still titled "untitled" were affected.
What does your Activities screen say at the bottom right corner? For example, mine says "Results 401 - 410 of 410". Is your "of xxx" correct?
Have you clicked on the "»»" symbol at the bottom of the page to advance you to the very end of the list?