[Jeff Morriss <jeff.morriss@xxxxxxxxxxx>]

Shlomo Taub wrote:
> I'm using DumpCap with the -b, -w and filesize options for multiple 
> output files. This works fine on the first run; however, if I stop the 
> capture, then restart with the same options, every packet gets written 
> to a new file. Is there any way to continue a previously interrupted 
> multiple file capture, without changing the file name?

Are you using Ethereal 0.99.0?  In that case you're probably hitting bug 
 895:

http://bugs.ethereal.com/bugzilla/show_bug.cgi?id=895

though the fact that it works the first time does NOT sound like that bug.

If it is that bug, it should be fixed in the Wireshark 0.99.1pre1 
pre-release.