Recompile all jsp & verify http://localhost:port/system/console/slingjsp

Upload assets in batches & make sure to run your custom code to update asset after workflow is completed. Also ensure latest service pack is installed.

For aem6 [1]. However for aem6.1 there are quite a lot service user added to avoid complete admin preveliage But With Restriction.  So don;t delete it.[1]  http://www.aemstuff.com/#article959[2]   https://cqdump.wordpress.com/2014/06/23/aem-6-0-admin-sessions/

sound like you have wrong mapping of segments in campaign.  Delete the campaign & recreate with adding experience.

File a support request if you don;t find in package share.

Install the hot fix 6760

Sorry some how i missed it is aem6. Yes it is expiration time. Surprised to see it does not sync after expiration time. Please file an support ticket & in that attach debug logs of ldap as well as oak version. 

A user and their group membership is only synchronized with a given interval. This interval is equal to the cache.expiration configuration parameter.  Did you waited till the expiry?

sounds like you have custom library which is using jquery hooked into aem author library.

Still in prototype phase to support apachedevicemap. As wurfl alternative use browsermap[1]. Please file official support ticket to track this down.[1]  http://docs.adobe.com/docs/en/cq/5-6/developing/mobile/device-client-side-detection.html#Using%20BrowserMap%20On%20Your%20Pages