Possibly those are self-deleted or locked threads which have not been correctly cleared off the Latest page. The reason they say Dec 1969 is quite interesting actually...
Unix time is currently defined as the number of non-leap seconds which have passed since 00:00:00 UTC on Thursday, 1 January 1970, which is referred to as the Unix epoch. Unix time is typically encoded as a signed integer. The Unix time 0 is exactly midnight UTC on 1 January 1970, with Unix time incrementing by 1 for every non-leap second after this.
If the software is supposed to print a date but can't find one, it will fall back to displaying 00:00:00 UTC, but since we're in the western hemisphere the timestamp is actually several hours earlier depending on which time zone you're in, so it renders for us as Dec 31 1969.
Anyway, I don't think this is anything to worry about, it looks like there's a bug with items not getting cleared correctly from the Latest page if they're not supposed to be there. They should just disappear, but instead they're still showing up as blank threads.
I'll let Elad know about this tomorrow, he should be able to clear it up. Thanks for the report.
= new reply since forum marked as read
