When we originally researched the use of this environment variable and decided it would solve some network connectivity/timeout issues associated with some users checking out a concurrent license, Esri recommended the variable to be set at 1,000,000, and that the unit was microseconds (= 1 second). This seemed to fix the problem; reference NIM037135 and KB Article 35659.
More recently, with the "borrowing" capability of the software at v10.0 being used more frequently and beginning to upgrade users to v10.1, we have had to revisit this variable. After a user "borrows" a license for use while disconnected from the network, the time out variable on that computer is apparently still active (at least on some laptops) and when the user tries to open ArcGIS, the laptop was often waiting about 16-2/3 minutes before the variable timed out, then the software discovered that a license had been borrowed directly to the client and it would then open. These 16-2/3 minutes equal 1,000 seconds, so we suspect the Esri reference value of 1,000,000 is actually in milliseconds, not microseconds; 1,000,000 milliseconds would equate to 1,000 seconds, or 16-2/3 minutes.
Can anyone confirm that the FLEXLM_TIMEOUT unit is actually "milliseconds", not "microseconds", or correct my understanding of the above?
Thanks,
Kirk