The time listed isn't time open this month, but the total time the Profile you are using Firefox was open (which could be years). But yeah, something doesn't seem right about that count (mine says 5+ years on a computer I've had for about 6 months lol). I'll file a bug to get this fixed, hopefully in a few betas.

This is a youngster, a Nightly open 42 minutes, (but rather crashy).

Not sure why that one works at all; never mind the age. It is a Mozilla 23.0a1 (2013-04-20) on Linux (Ubuntu 12.4 LTS). Windows ones have also worked recently.

• /forums/contributors/709103?last=51834#post-51723

However Canonical Aurora 22.0a2 (2013-04-17) is still not working the on screen error is

Not Found 
The requested URL /en-GB/ was not found on this server.

With the error console messages

Security Error: Content at https://fhr.cdn.mozilla.net/ may not load data from about:blank.
1366480247447	Services.Metrics.Provider.org.mozilla.addons	WARN	Add-on type without field: locale

This not a problem only occurring on distro builds, because I currently have a similar problem on Mozilla Beta 21.0

Any idea whether or not this is a known issue.
(For instance could bug 846848#c27 {recent UNC paths problem} have any bearing on this ? )

Thanks for your reply!

One thing I can guess caused this (even though it may be unlikely) is that I used Mozbackup to backup and restore my firefox profile (I also have sync enabled).

It could be because I had a wrong time when I start firefox or something (Completely new profiles don't have this issue)

I have no idea how Firefox works out the date used in FHR . No doubt Tyler will comment later.

I would hazard a guess that it may look at the date of creation/modification of the files possibly the date of modification of the profile folder. Whatever it is doing it may be doing it wrong. (I don't think Tyler has filed a bug yet. He probably works Monday to Friday

I guess it would do no harm to look at your file dates. See if any look wrong and as if they may explain the unexpected time period.

Thanks for the reply, @John99. I will try my best to supply as much as info I can.

I also have about:me addon installed. It shows November 12th, 2012 which should be the correct date that I first installed Firefox on this computer (I imported the profile later that day).

Thanks again and wish you a great weekend!

You have a good weekend too.

I have not followed FHR development, and would quickly get lost if I tried, but I am interested in it being implemented and developing into a user friendly diagnostic.

I did stumble across this

• https://docs.services.mozilla.com/healthreport/index.html#org-mozilla-profile-age

and note it says:

Notes
It is somewhat difficult to obtain a reliable profile born date due to a number of factors.

I suppose that may indicate the profile age may be a known problem still being worked on.

I also filed a bug about my own problem Bug 864195 - Displays errors but no data...

Hey all!

So I did file a bug report (no action yet due to the weekend) Bug 863900, and this will get looked at :) It sounds like there are some issues with how we both gather and display time up, so this may take some time to fix.

Now Bug 856315 - [FHR] Outlier startup time destroys chart usability

thanks John. Looks like I'm not alone. thanks a lot for your great support (it's my first support question here :) ). You guys are doing great - I will try to support others when I can!