Step Count Error after 20.29 Firmware Update

Hi All, 

I updated to the latest version 20.29 around 8AM last Friday morning, then took the bus to work for a change as I'd broken my little toe Wednesday night, so did very little walking that morning. 

But by lunchtime my 965 altered me that I'd done 10,000 steps, twice! So 20,000 in 4 hours, which was impossible! 

I'd taken the bus and hobbled around the office a few times and that was it! No where near 20,000 steps!

Haven't really tested it since, what with the broken toe, but wondering if anyone else had similar issues the day they updated?

Thanks all!

Andy.