Cant connect to some/many servers

[GnaMorg 0]

I have a problem when i try to connect to some/most of the servers.

I see the Server list in MP of Arma and when i doubleclick on a server the loading screen appears with the message "awaiting host" and then my PC crashes totally which means i cannot "Alt+F4" or press "escape". The only thing i can do is "Strg+Alt+Del" but still then i cannot close the ArmA-Task or Process and i have to reboot/reset.

the strange thing is that i only know one server where this behavior wont appear and i can connect normal but when i leave this server the same behaviour as i discribe above emerge.

All driver are actual + directX and i have reinstall Arma once but

nopthing happens.

The ArmA .rpt file says:

Registers:

EAX:00000000 EBX:00000000

ECX:08A63598 EDX:0125EC10

ESI:0125E62C EDI:001D8140

CS:EIP:001B:7C91EB94

SS:ESP:0023:0125E59C EBP:0125E5FC

DS:0023 ES:0023 FS:003B GS:0000

Flags:00000202

===FROZEN====>>>>>>END

No alive in 10000

note: Minidump has been generated into the file C:\Dokumente und Einstellungen\GnaMorg\Lokale Einstellungen\Anwendungsdaten\ArmA\arma.mdmp

===FROZEN====>>>>>>BEG

Version 1.14.5256

Fault address: 7C91EB94 01:0000DB94 C:\WINDOWS\system32\ntdll.dll

Prev. code bytes: 49 00 90 90 90 90 90 8B D4 0F 34 90 90 90 90 90

Fault code bytes: C3 8D A4 24 00 00 00 00 8D 64 24 00 90 90 90 90

Registers:

EAX:00000000 EBX:00000000

ECX:08A63598 EDX:0125EC10

ESI:0125E62C EDI:001D8140

CS:EIP:001B:7C91EB94

SS:ESP:0023:0125E59C EBP:0125E5FC

DS:0023 ES:0023 FS:003B GS:0000

Flags:00000202

===FROZEN====>>>>>>END

pls help me because i want play arma as before this problem emerge

[GnaMorg 0]

Can a mod. pls move it to the multiplayer section???

[.kju 3245]

addons loaded?

firewall?

change GPU settings?

what about LAN play?

host your own server?

[GnaMorg 0]

Ok i have trryed it with no addons but still the same behaviour.

Also i tested with vanillaArma to Host a Server and this works till i want to disconnect = same behaviour as i dicripted in the first post.

I changed my Videocard to a HD 4870 and this one is unmodded or overclocked ( or what do you mean with GPU-Settings?)

And i have a Firewall in my Router but the ports 2302-2305 are open.

In the Multiplayer Section i found this post wich describe the same problem but i found it after i have written my first post.

http://www.flashpoint1985.com/cgi-bin....t=74216