Tony
When I look at the file in com_jevents in the download for 3.4.33 , the admin en-GB has a few of the spelling errors fixed in the previous updates.
line 477 and 478 yearl,
line 672 thoses
line 679 addtional & specifally
line 1089 unreadble
line 1198 occursring
line 1324 permiossion
line 1508 perrmisisons
They are in the raw en-GB file you linked to as well just the line number are off a bit.
there was 100 or so misspelled colour but I will let that one slide
Steve