Hi! I have problems with Eset NOD32 AV Business Editioin v. 4.2.35 on MS Windows XP Pro. SP3 (with latest MS updates installed) in a MS Windows domain. A typical desktop PC has at least AMD Sempron 3200+ and 1 GiB DDR RAM, while laptops have at least Intel Pentium M 1.8 GHz and 1 GiB DDR RAM. When executables are started (both from local HDD or from a network share) high CPU usage (almost 100%) can often be noticed and the Windows becomes unresponsive. Process Explorer shows that the cause of the problem is ekrn.exe process. The high CPU usage may last quite long for some executables which makes users (and the admin) unhappy. Here is a capture of the Process Explorer data that shows the execution of the following two commands from the command prompt (the asdf.exe has 2 MiB, a grid cell corresponds to 5 seconds): Code: C:\temp>copy \\myserver\myshare\asdf.exe . 1 file(s) copied. C:\temp>\\myserver\myshare\asdf.exe The first instance of high CPU usage corresponds to the file copying, which is quite slow, while the second one corresponds to invoking the same EXE file, which is also quite slow. The following image was captured while starting GIMP v.2.6.7 from the C: partition: If the real-time file system protection is disabled in NOD32, the above two commands finish in a split second, while GIMP also starts much faster. The MS Windows Server 2003 that provides the \\myserver\myshare has NOD32 AV v. 4.0.474 installed with the real-time file system protection enabled but the shared directories are excluded from real-time scanning. I'm attaching the NOD32 configuration of the MS Windows XP (with some confidential data excluded). Does anyone know how to solve this problem? -- rpr.