High cpu usage on explorer.exe after update to v4.1.149672.916

  • CPU (32 bit or 64 bit)
    Intel Core 2 Duo T8100 - 64 bit

  • Operating System information (including Service Pack Version)
    Windows Vista Business x86 SP1

  • Actively-running security and utility applications
    NOD32 v4.2.40

  • Specific symptoms of the bug, and steps you can take to reproduce it (step by step).
    After updating to Comodo v4.1.149672.916 (from 4.0.x) the process explorer.exe started to have a continuous cpu usage of 5-15% even when the computer is idle for a long period of time. Any user action like scrolling an explorer files list causes it to jump to 50%.
    The explorer.exe process is probably the one that handles the taskbar because other symphoms are: Menus opened by windows start menu (for example QuickStart menus or administrative tools menu) don’t open, unhide/hide tray icons works very very slowly

  • Specific steps you have taken to try to resolve it.
    no way. even disabling D+ does nothing.

  • Brief description of your Defense+ and Firewall+ mode (Custom, Train with safe) plus mention if you modified any setting in ADVANCED section of D+ and F+ (Optional if you post a Comodo Firewall Pro Configuration Report)
    Default config after installing CIS with optimum protection

  • Report if you are using an Administrator account Or a Limited User account. Vista users please Report if you have UAC Disabled or Enabled (Optional if you post a Comodo Firewall Pro Configuration Report)
    UAC enabled