Piste Basher wrote: On my 2925 the dashboard would show the correct date and time for a minute or so and then jump to one month ahead. Now using a 2862 which doesn't display that behaviour.

We have a 2860 the date changes a month ahead when the dashboard refreshes the first time. Also the subnet panel at the bottom double spaces on the same refresh

I have the same issue on two 2860's updated from earlier firmware versions, although one now shows the correct time.

The time elsewhere is correct (i.e. Date & Time settings)

What OS's and browsers?

I'm on 8.1 with Chrome and IE, and it is ok.

iOS safari, chrome and Firefox. It’s Webserver issue, not a client issue.

I've just upgraded my 2860ac to 3.8.6_BT and I get the same error. The system time is being set correctly, as seen on Maintenance time & date, and the syslog files

Leave it online and see if this resolves itself overnight.

On a 2860Vn+ it now displays correctly, on a 2860n it still show invalid format. Both have been online for over a week.

It looks as if it's only a formatting issue, hopefully resolved in the next update. In the meantime I can live with it the goodies in 3.8.6 are worth it.