ThreatExpert's Statistics for not-a-virus:WebToolbar.Win32.WhenU.z [Kaspersky Lab]:

not-a-virus:WebToolbar.Win32.WhenU.z [Kaspersky Lab] is also known as:

Threat Alias	Number of Incidents
Adware.Savenow [Symantec]	156
Adware.WhenU_SaveNow [PC Tools]	144
AdWare.Win32.WhenU [Ikarus]	120
not-a-virus:.WebToolbar [Ikarus]	12
Virus.Win32.AdWare [Ikarus]	12