Hi,
I have various python scripts running through scheduled tasks. Each scheduled task is pointing to a python script. They run independently.They are scheduled to run daily and have been working fine for months. Last week,  I added a new task and pointed to a new python script. It seem to be since then,  the tasks do not complete even I ran them manually. If I run the python scripts using python they work fine.
 
The tasks ran okay until the 29th May.  I compared the history of the tasks before the 29th May and after. I noticed in the Task Category the following difference:
 
1. When the task that ran properly (before 29th May), the instance is c:\python26\Arcgis10.0\python.exe 
2. The same task  which does not complete after the 29th May. The instance is pointing to Notepad.exe
We use a Service account and it has the permmisions. Connections to ArcCatalog are in place.
Are you able to provide some advice please?
Thanks,
T