This explains a problem I was having with a serial weather station on xp too... It was startup timing dependent, but whatever it was didn't seem to mind when IT didn't get the port, and nothing I knew of needed the port besides the weather station... Get Process Explorer from www.sysinternals.com and Autoruns from there as well. It will give processes, modules, command lines, etc for everything that runs. It'll even replace taskman. I'll check mine out when I get time - right now it's working fine in the corner. ;) piclist-request@mit.edu wrote: > Date: Fri, 19 Jan 2007 11:58:39 -0500 > From: John Pfaff > Subject: Re: [EE] PC Serial Port - The Answer > > I wondered the same thing. Unfortunately, NTFiles didn't tell me much > more that rundll32.exe was using the port, didn't tell me what started > rundll32. > BTW, rundll32 is still running, but the tablet driver gets to the port > first. I can log out, switch users, etc, and the tablet still works, so > I'm not going to worry about it until I have some free time, hopefully > by 2008 :) > > > Herbert Graf wrote: > >> On Fri, 2007-01-19 at 07:27 -0800, Mauricio Giovagnini wrote: >> >> >>> Weird! >>> >>> I wonder what was runll32.exe doing with the serial port.... >>> >>> >> Unfortunately rundll32.exe alone doesn't tell us much. It is a process >> which loads DLLs and runs them, it doesn't do this by itself, but when >> requested by another application (indirectly). >> >> TTYL >> >> >> > > > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist