What kind of file you are opening? Are there assemblies in bin on a network share? I would also recommend trying the following in order to isolated the problem:
1. Try copying files locally as opposed using network share and see if it makes a difference.
2. If you are running Anti-Virus or Ani-Spyware software, try disabling them temporarily.
3. Check if CPU activity is high - i.e. if VWD hang in a loop or is it waiting for a network IO.
Thanks
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