The error on Publisher JobReload "The Qlikview Engine working with document ... hasn't been responding for 1800 seconds".
There are two XML files that contain a variable named "MaxSecondsAtZeroCPU" which is set at 1800 seconds.
When some heavy SQL SELECT from ODBC waits more 30 minutes (1800 seconds) the Engine supposes that the job is blocked and stops it.
The first one contains the default value (Replace the value in the second file at every "change and save" on the jobReload) of the variable. the folder is:
C:\Documents and Settings\All Users\Application Data\QlikTech\Publisher\CommandCenter\QVPR\ExecutionServiceResource.xml
The second file contains the value used by the QV Engine. the folder is:
C:\Documents and Settings\All Users\Application Data\QlikTech\Publisher\wordorder.xml