I got the same prob. Since update (0.42.116181) I lose every connection after a little while to server with good pings. Sometimes it even doesnt pass the "wait for host" screen, sometimes the session connection cracks after a randomly period of time.

:'( HEEEELP!!! :'(

Dear Andy,
thanks for your respond and sorry for the delay!

first: the Task Manager shows me DayZ has been closed, no process's still running.
The problem occurs only on the desktop, the taskbar and the only way solving the prob is the TM via Ctrl+Alt+Del (second mouseclick responds - after that all is fine)
second: my problem is getting more curious...
the effect of no resond on mouseclicks stays for longer (i tried waiting for 5 min) an exception is only the running steam programm. in that i can start DayZ again (as said, no process of DayZ is still running after i quit it) but with some new issues (f.e. beeing kicked to the desktop after clicking the "I understand" button - DayZ's still running)

What i've tried so far:

1. start the game - playing on a server - quit - testing mouseclicks and waiting for 5 min -> nothin changes

2. point 1) with starting DayZ new in Steam after like 3 min -> nothin

3. what you asked me to do

4. testing the reproducibility -> "sometimes"

System: 64bit Win7ultimate, Steam installed on 2x SSD in RAID0, library on 2X HDD in RAID0, 16Gb RAM, 4x3,6GHz CPU... and so on...

Thanks for the help

Slim

Still the same issue here! please respond!