Failed recordings on older box and Freeview channe...

Question

For the past couple of days our YouView box has failed to record every single scheduled recording.  Some record partially, missing the start or the end (or both - sometimes only recording a few minutes).  Others don't record at all.  This started on the 2nd of July and before that we had never had a failed recording as far as I rememeber.
I've been searching this forum and found a lot of threads about similar problems, but all seem to refer to the new G4 boxes and/or the internet channels.  We have an older BT YouView box (Humax DTR-T1000?) and don't have the internet channels in our package - all recordings are from Freeview and Freeview HD channels.
None of the recordings conflicted, there were no other recordings at the same time.  We have a good signal and fast internet connection.  The hard disk is showing 93% free space.
I don't know if it's a coincidence, but around the same time the BT Vision player became very slow, to the point you have to wait several seconds for it to respond to the remote.  There was also an incident where the box claimed to have no internet connection despite everything else on the network being able to access the internet fine.  A reboot sorted that out.
What could have caused the box to start failing all it's recordings and how can it be fixed?
Manufacturer software: 18.3.0
Component software: 2.5.6
Platform configuration: 1017
ISP configuration: 220

Answer 1

Well, looks like the fix was only temporary.  It behaved until last night, when it failed to record every single scheduled recording again.
The above linked page was interesting (thanks) and it sounds as though high eco mode helps due to the box rebooting more.  However, we have to reboot and power cycle the box pretty regularly anyway due to the slowdowns and lockups, and the two minute startup time for high eco is just frustrating (plus you can't use the Android app).
To be honest I'm getting really sick of a box that has to be constantly rebooted and reset just to keep it working properly, and now can no longer be relied on to record our shows.  Would the new G4 box be any better?  What do you think are our chances of getting BT to replace it?