epistable - 2:02 pm on Oct 29, 2008 (gmt 0)
For the visits from your home, do they show up with the weird time on site characteristics as well? Do you have any custom modifications done on the tracking code? What I'm thinking here is setting a particular domain for cookies that may not be the domain you're running on. That would cause a GIF hit to be sent, but no cookie data to be sent with it, which _may_ show up strangely in the reports, but I don't know for sure.