Copying files to network drive makes Finder unresponsive for 5-10mins

Hi There,

I'm seeing a random issue when copying files to our 10.6.8 server - the finder becomes unresponsive for a good 5mins. If I look in the log, it looks like the network drive comes back indicating that it went offline (although it didn't disappear from the Finder) - I see stuff like:

17/09/13 11:29:18.922 AM KernelEventAgent[57]: tid 00000000 type 'afpfs', mounted on '/Volumes/Installers', from '//user@192.168.0.2/Installers', not responding
17/09/13 11:29:18.926 AM KernelEventAgent[57]: tid 00000000 found 3 filesystem(s) with problem(s)
17/09/13 11:29:19.000 AM kernel[0]: AFP_VFS afpfs_DoReconnect started /Volumes/Installers prevTrigger 1 currTrigger 2
17/09/13 11:29:19.000 AM kernel[0]: AFP_VFS afpfs_DoReconnect:  reconnect already in progress for /Volumes/Installers, going back to wait
17/09/13 11:29:19.000 AM kernel[0]: AFP_VFS afpfs_DoReconnect:  Restoring session /Volumes/Transfer
17/09/13 11:29:19.000 AM kernel[0]: AFP_VFS afpfs_DoReconnect:  get the reconnect token
17/09/13 11:30:45.822 AM mds[51]: (Error) Store: <MDSDistantStore 0x7fb01c3776e0 shutdown:NO got shutdown notification:NO>{channel:0x7fb01a240270 localPath:'/Volumes/Installers'} MDSChannel failed -- initiating recovery
17/09/13 11:30:55.827 AM mds[51]: (Error) Server: Failed to register path "/Volumes/Installers" to store <MDSStoreToken: 0x7fb01a52e930>{storeID:0x6b000010 registered:YES private:NO age:22m56s uuid:423297E8-09DD-47EC-83DB-AE2D24D03E41}
17/09/13 11:30:57.912 AM Locum[1024]: Connection with distnoted server was invalidated
17/09/13 11:31:01.844 AM Locum[1025]: Connection with distnoted server was invalidated

I have a new Belkin Thunderbolt Dock which is where the Ethernet connection is plugged into. I don't have the Apple USB Ethernet adapter at work anymore to test (I've also updated to 10.8.5) but is thre a way to search for the dock in the console to see if this is what is causing the issue?

Any pointers in the right direction would be much appreciated.

Cheers

Ben