So I logged on the server a few minutes ago and checked the following:
- Sessions in the eXpress database = 1222
- Tcp sessions reported by "netstat" = 523
- Tcp sessions reported by "netstats" on port 402 = 451
- Tcp sessions reported by "netstats" as CLOSE_WAIT = 275
Which means the server only has 176 active tcp sessions (including the PXE and SQL connections) when the axengine (and thus the DS console) reports 1222 active computers.
Looking on the server Aclient (which as the same symptoms as all other machines - a white icon instead of the expected blue one) we find the following entry:
"Error 10054 WSAECONNRESET"
Which is documented on the AKB (https://kb.altiris.com/article.asp?article=20032&p=1). So, I need to see if the proposed steps there are applicable to this case.
I'll post updates directly on this entry later on!