[Xymon] Date issue with enable/disable page on 4.3.8

I'm running xymon 4.3.8.

Recently I disabled a couple of alerts via the web-page. Two issues, first it works for a while, but then some random and pretty short time later, the page shows red again.

Also, the second or third time, I just set the alert out quite a ways, like disable until February 2014, and I noticed xymon reports funky dates like the one below.

Disabled until Tue Oct 19 07:48:44 1926

Is this a known bug with xymon in this verison?

Thanks,

T