Non-IT people may say it's a crash no matter what actually happen. "Crashed" "Freezed" "app not working" "can't print" is the same thing for them often.
BTW I've seen an error where app server couldn't write files to a directory but only for specific filenames (that wasn't already created). Turns out if you have dozen thousands of files in one directory the hash table has collisions and some files you can create while some other names you cannot. It was lot of fun to discover that :)
And customers described it as "server doesn't work" but when we connected the randomly generated names it was trying to write were different and it worked.
BTW I've seen an error where app server couldn't write files to a directory but only for specific filenames (that wasn't already created). Turns out if you have dozen thousands of files in one directory the hash table has collisions and some files you can create while some other names you cannot. It was lot of fun to discover that :)
And customers described it as "server doesn't work" but when we connected the randomly generated names it was trying to write were different and it worked.