[Bug 29367] New: Microsoft Flight Simulator X installer very slow

http://bugs.winehq.org/show_bug.cgi?id=29367

Bug #: 29367
           Summary: Microsoft Flight Simulator X installer very slow
           Product: Wine
           Version: 1.3.35
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: msi
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

ps shows idriver.exe using 100% of cpu.

The initial dialog takes about a minute; it then presents you with a Next
button.  It then enters a very long slow phase.  oprofile with -O1 shows

797310   83.7358  msi.dll.so               wine-preloader          
msi_get_loaded_folder

oprofile with -O0 shows

182926   51.4386  msi.dll.so               wine-preloader           strcmpW
103075   28.9846  msi.dll.so               wine-preloader          
msi_get_loaded_folder