After using NOD32 for almost a year without problems, I upgraded yesterday to v2. Installation went smoothly, I rebooted, and the new splash screen came up. I went into the console and scheduled nightly signature-file update and checked the IMON settings. So far so good. But then I could not open one of my mailboxes in Eudora 5.2 (paid version without ads). The mailbox had a lot of messages in it, BTW. Others mailboxes I could open, but the messages displayed as HTML not as rendered text. After uninstalling NOD32, these problems went away, yet when I reinstalled NOD32 v2 last night these problems did NOT reappear. Mysterious. HOWEVER, I can send myself the EICAR.COM test file (downloaded from ESET yesterday before I upgraded, with AMON v1 turned off) and NOD32 blithely lets it in! And I can copy the EICAR.COM test file from a network share onto my hard drive, and NOD32 lets it in. Yet if I try to download the test file from the Eset website, NOD32 flashes a big red warning message. I don't understand this behavior.