I'll ask one more time. Alerting is fine, if it's warranted. There have been over 17,000 posts here in the last 30 days. So, finding the post which is 'the one presenting the freeware "Endtaskpro"' isn't an easy task.
So, what thread were you reading at the time?
If we can't find the post, we can't determine if you were pointed to where a malicious file was located, which would warrant an alert, or if the link was indeed pointing to the 'correct' program which would seem to indicate a false positive has been generated.
The web site you listed says, among other things:
[i]Across all ThreatExpert reports, the file "hooktool.dll" has never been identified as a threat.[/i]
and
[i]Please note that [b]the name of the file should NOT be used to define if it is legitimate or not[/b]. Such determination can only be made by observing its dynamic behaviour.[/i]
and specifically mentions the path where the file is installed using 'endtask pro' (note the space in the name).