This router has been rock solid for me, never any blips.  I always keep it updated (especially given the current situation).

This morning, had no internet, the router was locked up.  Had to power cycle it to get it back to life.

What interesting is last night was switched from GMT to BST, could that be related?

Otherwise, it could be just flaky firmware, released in a rush due to the recent issues 

Either way, thought I would report it here, see f anyone else had similar problems.

I've updated a 2927 to v4.4.6.1 and seeing reboots every 24hrs, nothing untoward in the Syslog to suggest why this is happening but noticed it on v4.4.5.8 and 4.4.5.9, was optimistic Draytek had resolved it but obviously not

No issue with v4.4.5.7_RC7 I'd previously been using on the device so something introduced since this FW release.

This wasn't a reboot, this was a lock solid, no connectivity at all.

I've certainly not experienced that with my Router, maybe as you say down to DST changes?

I've not usually experienced Draytek Routers locking up fully, generally the watchdog forces a reboot. All I can suggest is if it happens again to activate the Syslog (to a USB flash drive) and raise a support request with Draytek.