Another user has reported issue (yesterday) on askubu
https://askubuntu.com/questions/1353382/any-ubuntu-21-10-iso-download-that-isnt-corrupted
Picture of screen end-user reported can be seen at https://i.stack.imgur.com/oeYYg.jpg
The picture fits what @Leok describes I believe; which is different to the sony vaio I used - however as the sony quickly moved to the next boot device (ssd) it booted a prior installed image meaning I never got a good look at it.
Another user has reported issue (yesterday) on askubu
https:/ /askubuntu. com/questions/ 1353382/ any-ubuntu- 21-10-iso- download- that-isnt- corrupted
Picture of screen end-user reported can be seen at https:/ /i.stack. imgur.com/ oeYYg.jpg
The picture fits what @Leok describes I believe; which is different to the sony vaio I used - however as the sony quickly moved to the next boot device (ssd) it booted a prior installed image meaning I never got a good look at it.