C:\> set PERL_DL_DEBUG=1

C:\> perl -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy "
DynaLoader.pm loaded (C:/perl/site/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/site/5.12.2/lib C:/perl/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/5.12.2/lib ., C:\MinGW\lib)
DynaLoader::bootstrap for Win32::API (auto/Win32/API/API.dll)
DynaLoader::bootstrap for Win32::Console (auto/Win32/Console/Console.dll)
The locale codeset (cp1252) isn't one that perl can decode, stopped at C:/perl/site/5.12.2/lib/Encode/Locale.pm line 87.
Compilation failed in require at C:/perl/site/5.12.2/lib/LWP/UserAgent.pm line 976.

C:\> perl -MEncode -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy "
DynaLoader.pm loaded (C:/perl/site/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/site/5.12.2/lib C:/perl/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/5.12.2/lib ., C:\MinGW\lib)
DynaLoader::bootstrap for Win32::API (auto/Win32/API/API.dll)
DynaLoader::bootstrap for Win32::Console (auto/Win32/Console/Console.dll)
The locale codeset (cp1252) isn't one that perl can decode, stopped at C:/perl/site/5.12.2/lib/Encode/Locale.pm line 87.
Compilation failed in require at C:/perl/site/5.12.2/lib/LWP/UserAgent.pm line 976.

C:\> perl -MEncode -MEncode::Locale -MLWP::UserAgent -e " LWP::UserAgent->new->env_proxy "
DynaLoader.pm loaded (C:/perl/site/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/site/5.12.2/lib C:/perl/5.12.2/lib/MSWin32-x86-multi-thread C:/perl/5.12.2/lib ., C:\MinGW\lib)
DynaLoader::bootstrap for Win32::API (auto/Win32/API/API.dll)
DynaLoader::bootstrap for Win32::Console (auto/Win32/Console/Console.dll)