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From: Jano <notelacreas@porfavor.no>
Newsgroups: comp.lang.ada
Subject: Re: timeouts
Date: Fri, 27 Aug 2004 11:31:35 +0200
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Date: 2004-08-27T11:31:35+02:00
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Randy Brukardt wrote:
 > Jano wrote:
>>I was bitten by it. It involves Gnat 3.15p on Windows. Delays can
>>mis-delay for unknown periods of time, effectively suggesting that tasks
>>are locked when they are not.
> 
> 
> The problem I recall (it happened in Janus/Ada, too, because it's actually
> caused by a patch in the OS for a hardware problem) is that
> QueryPerformanceCounter leaps forward by large amounts. Depending on how
> Ada.Calendar is written, that can have bizarre effects. I believe that Tom
> Moran created a patch for GNAT's Ada.Calendar for that; I don't know if
> 3.15p has it, but if not, you should try applying it. (Even better is
> getting a machine without the faulty chipset, but that's not always
> practical!)

This one is a different problem, as someone as already pointed. It 
involved certain chipsets/motherboards only.