Wireshark-users: Re: [Wireshark-users] files fail to close
>>> "Dey, Anthony" <[email protected]> 09/16/09 2:35 PM >>>
> Has anyone experiences a similar problem when running a capture with the
> settings below.  None of the files close after reaching  20 MB. And the
> pop-up closing file! Please wait... does not go away.
> I am running the latest wireshark release 1.2.2.

Sounds like Wireshark bug 3046


One workaround I've found for this problem is to disable the 
"Update list of packets in real time" option IF the "Use multiple files" 
option is enabled.

I hope this helps,

Jim Y.