After installing the latest GA (Generally Available) version, 4.1.8, of
the MySQL Server  on my Windows XP SP2 system, I noticed something
strange with the PATH environment variable. Upon opening a command
prompt window, I could not directly execute any of the usual
applications (ipconfig, net, etc.) which reside in the Windows'
subdirectories. Examining the environment variables, I noticed that the
special value %SystemRoot% was not being expanded to "C:\Windows" as it
Some googling revealed that this usually happens when some application
inadvertently (or not) changes the type of the value "Path" under the
Manager\Environment in the registry, from REG_EXPAND_SZ to REG_SZ. When
this happens, the system does not expand the special values in the
string and thus, path entries using them no longer work.
I write to ask whether anybody else has also noticed this behavior on
their systems, as I am still not completely sure it is caused by MySQL.
I will post again, if I find any conclusive evidence.
Ney André de Mello Zunino