Application Hang event id 101

Hi,
We have a strange issue with an application that keeps crashing it's a real estate software.
Whenever we make a change and try to save it to the database it hangs then crashes with the "send dont send" screen. It happens all over he network however it does not happen on the server and also fine if the data base is local on the workstation so it seems to be a network issue however it worked fine with a random foreign laptop that I tested with on the network. It also works OK in safe mode but slow. Ruled out AV also turned off almost all running services but still no joy. Could it be a NIC driver? Dr Watson also crashes when this happens.

Here is the event:

Event Type:        Error
Event Source:    Application Hang
Event Category:                (101)
Event ID:              1002
Date:                     04/03/10
Time:                     12:21:49 PM
User:                     N/A
Computer:          OWNER-62E3E706E
Description:
Hanging application RESTpro.exe, version 8.0.0.9, hang module hungapp, version 0.0.0.0, hang address 0x00000000.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74   Applicat
0008: 69 6f 6e 20 48 61 6e 67   ion Hang
0010: 20 20 52 45 53 54 70 72     RESTpr
0018: 6f 2e 65 78 65 20 38 2e   o.exe 8.
0020: 30 2e 30 2e 39 20 69 6e   0.0.9 in
0028: 20 68 75 6e 67 61 70 70    hungapp
0030: 20 30 2e 30 2e 30 2e 30    0.0.0.0
0038: 20 61 74 20 6f 66 66 73    at offs
0040: 65 74 20 30 30 30 30 30   et 00000
0048: 30 30 30                  000    
------------------------------------------------------------------------------------------

Event Type:        Error
Event Source:    Application Error
Event Category:                (100)
Event ID:              1000
Date:                     04/03/10
Time:                     12:21:14 PM
User:                     N/A
Computer:          OWNER-62E3E706E
Description:
Faulting application drwtsn32.exe, version 5.1.2600.0, faulting module dbghelp.dll, version 5.1.2600.5512, fault address 0x0001295d.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74   Applicat
0008: 69 6f 6e 20 46 61 69 6c   ion Fail
0010: 75 72 65 20 20 64 72 77   ure  drw
0018: 74 73 6e 33 32 2e 65 78   tsn32.ex
0020: 65 20 35 2e 31 2e 32 36   e 5.1.26
0028: 30 30 2e 30 20 69 6e 20   00.0 in
0030: 64 62 67 68 65 6c 70 2e   dbghelp.
0038: 64 6c 6c 20 35 2e 31 2e   dll 5.1.
0040: 32 36 30 30 2e 35 35 31   2600.551
0048: 32 20 61 74 20 6f 66 66   2 at off
0050: 73 65 74 20 30 30 30 31   set 0001
0058: 32 39 35 64               295d    

Solution: Application Hang event id 101

Resolved:
It was caused by the "Network location awareness" MS service, disabled it and all looks good. However not sure what the side effects will be. Does anyone know?