1) may be should you code a full path in your bat file.
 Code:
DEL /F /S /Q "C:\acad.dvb"
DEL /F /S /Q "C:\acaddoc.lsp"
DEL /F /S /Q "C:\acadapq.lsp"


2) in explorer, when you show an UNC path and the double-click on a .bat file, you always have a message that says it is impossible to set the current directory to an UNC path (in this case, default dir is %systemroot%). This doesn't not happen when the bat file is on a mapped drive.

if you run a bat file from the netlogon within a kix script, you can try something like that :
 Code:
SHELL 'start "my title" /D "%temp%" cmd /C "\\SERVER\NETLOGON\test.bat"'


start is a command line command to execute a command without waiting for process end
"my title" is the windows title
/D "%temp%" is the default dir for the process. In this case, cmd can use %temp% as default dir !!!
_________________________
Christophe