Hobbit http check - strange behaviour!?

There is one host that is checked by our Hobbit server (4.2.0-with patches) and now and then the http-check for that host fails. However, on the monitor server the output turns up to be YELLOW although each of the 5 tested URL's have a failed condition (status RED):

[snip] Wed Sep 26 13:47:46 2007: Server timeout ; Server timeout ; Server timeout ; Server timeout ; Server timeout

http://some.url/ - Server timeout

Seconds: 10.74

http://some.url/ - Server timeout

Seconds: 10.74

http://some.url/ - Server timeout

Seconds: 10.74

http://some.url/ - Server timeout

Seconds: 10.74

http://some.url/ - Server timeout

Seconds: 10.74 [snip]

Now I guess it might has something to do with the checked client, but I do not understand Hobbit's respones?! Could it be Apache in the midst of dying, but somehow still alive? Or...?

Any hints?

Thanks, Peter