Hello everybody !

A strange things appear only on 2 machines at our company among the 7 using the same DOS program (written with Microsoft PDS BASIC version 7).
It's a helpdesk utility. Sometimes, call starting time is incorrect.
For example, a call starts at 10:00 AM. The user opens a log entry. But 08:30 AM is logged. So statistics are false.

We did not notice any hardware problem, time seems to be correctly reported.
We did not find that time is reported incorrectly in the future, only in the past.

Help would be greatly appreciated.