Upgraded civicrm but the previous jquery files are still being called
you need to rebuild all the menu items please use the following 
Drupal sites: http:///index.php?q=civicrm/menu/rebuild&amp;reset=1
and clear cache again 

for more details please have a look at the below documents 
http://wiki.civicrm.org:8090/confluence/display/CRMDOC/Moving+an+Existing+Installation+to+a+New+Server+or+Location