Delete multiple articles

Hi
Articles won't delete in the ajax/extjs manner they are intended to delete. Must manually refresh page instead after submitting Delete. Only works right on modxcloud.com hosting. It wont in other ubuntu/apache hosting I have. See attached.
Any ideas of a fix please?
Thanks

****installing APC on server fixes it...see https://www.digitalocean.com/community/tutorials/how-to-install-alternative-php-cache-apc-on-a-cloud-server-running-ubuntu-12-04

Please update Articles server requirements.

Also modxcloud.com phpinfo:
PHP Version 5.4.34
apc
bcmath
bz2
calendar
cgi-fcgi
Core
ctype
curl
date
dba
dom
enchant
ereg
exif
fileinfo
filter
ftp
gettext
gmp
hash
iconv
imagick
imap
intl
json
ldap
libxml
mbstring
mcrypt
mhash
mysql
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
Phar
posix
pspell
readline
Reflection
session
shmop
SimpleXML
soap
sockets
SPL
sqlite3
ssh2
standard
sysvmsg
tidy
tokenizer
wddx
xml
xmlreader
xmlrpc
xmlwriter
xsl
zip
zlib

...good idea to have all these installed on your own box