Virus Signature Database Update 5418, released on September 2, 2010 at 6:00 AM PST may cause an "ekrn.exe" error. Other reported issues include ekrn crashing, systems not responding and threat notifications with blank name fields.
At 8:00 AM PST, Virus Signature Database update 5419 was released In most cases, restarting your computer and updating your ESET security product will resolve the issues you are experiencing.
If the issue persists after restarting and updating your ESET security product, then restart again. If you still experience issues after restarting twice, uninstall and reinstall your ESET security product.
If you cannot restart your system, update your ESET security product to Virus Signature Database update 5419 and run "net start ekrn" from the Command Line to start ekrn.exe. If you receive a message that ekrn started successfully, your issue should be resolved. If you receive a message that ekrn is already running, restarting your computer should resolve the issue.
If you are using a mirror server, click Tools → Server options → Updates and deselect the Provide updates via internal http server option. Click Update now and ensure that it updates to 5419. Then re-select the Provide updates via internal http server option and click OK.
If you continue to receive this error or experience other issues, please click here to contact ESET Customer Care.