To validate any such warnings, use other anti-malware sites, such as McAfee Site Advisor. Verification of such warnings is a necessary task, so not to cause a panic. Claims that the entire BlogSpot address space is infected won't do anybody any good, except maybe the hackers who would love to see benevolent web sites, hosted by BlogSpot, avoided by those needing advice.
Don't be caught up by rumours - please validate any security alerts. And post your findings at Google Blogger Help - Something Is Broken.
>> (Update 2/10 1:02): Kaspersky customers report that the KIS signature update was received but the problem remains unresolved. It's definitely a false positive though.
>> (Update 2/9 21:00): Advisory note on Kaspersky Support Forum noted, possible time stamp 2/9 21:19 UDT states
False alarm fixed. Please update local bases.
>> (Update 2/8 20:30): Kaspersky customers, in their support forum, are also suspecting a false positive detection.