Did you ever figure out your issue with spike running everything at once? I'm having a similar issue when fuzzing an FTP server. It gets the initial server message, but then sends all of my...

I run off of a EeePc 900, and packet injection works perfectly with BT4 beta (and it also did on BT3). You could get these netbooks for super cheap as well.

I believe that once you disconnect from a Meterpreter session, you can not reconnect.

The easiest thing to do in this situation, is to simply bind a shell to a port using NetCat or a similar...