You can easily speed up your SocialEngine with adding these rules to you main .htaccess file (by default Hostiso add this for you with any transfer or new setup)
# 1 YEAR
<filesMatch "\.(ico|pdf|flv)$">
Header set Cache-Control "max-age=29030400, public"
</filesMatch>
# 1 WEEK
<filesMatch "\.(jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=604800, public"
</filesMatch>
# 2 DAYS
<filesMatch "\.(xml|txt|css|js)$">
Header set Cache-Control "max-age=172800, proxy-revalidate"
</filesMatch>
# 1 MIN
<filesMatch "\.(html|htm|php)$">
Header set Cache-Control "max-age=60, private, proxy-revalidate"
</filesMatch>
<ifModule mod_expires.c>
# any Expires Directives go here
</ifModule>
<ifModule mod_headers.c>
# any Header directives go here
</ifModule>
<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault A300
ExpiresByType image/x-icon A2592000
ExpiresByType application/x-javascript A3600
ExpiresByType text/css A3600
ExpiresByType image/gif A604800
ExpiresByType image/png A604800
ExpiresByType image/jpeg A604800
ExpiresByType text/plain A300
ExpiresByType application/x-shockwave-flash A604800
ExpiresByType video/x-flv A604800
ExpiresByType application/pdf A604800
ExpiresByType text/html A300
</ifModule>
<ifModule mod_expires.c>
ExpiresActive On
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/x-icon A2592000
ExpiresByType application/pdf A2592000
ExpiresByType application/x-javascript A2592000
ExpiresByType text/plain A2592000
# Expires after 4.8 hours
ExpiresByType text/css A17200
</ifModule>
<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault A86400
ExpiresByType image/x-icon A2592000
ExpiresByType application/x-javascript A2592000
ExpiresByType text/css A2592000
ExpiresByType image/gif A604800
ExpiresByType image/png A604800
ExpiresByType image/jpeg A604800
ExpiresByType text/plain A604800
ExpiresByType application/x-shockwave-flash A604800
ExpiresByType video/x-flv A604800
ExpiresByType application/pdf A604800
ExpiresByType text/html A900
</ifModule>
<ifModule mod_headers.c>
# YEAR
<filesMatch "\.(ico|gif|jpg|jpeg|png|flv|pdf)$">
Header set Cache-Control "max-age=29030400"
</filesMatch>
# WEEK
<filesMatch "\.(js|css|swf)$">
Header set Cache-Control "max-age=604800"
</filesMatch>
# 45 MIN
<filesMatch "\.(html|htm|txt)$">
Header set Cache-Control "max-age=2700"
</filesMatch>
</ifModule>
