Sack the "add-memory-alike" icon from the WBStart drawer and edit your startup-sequence to state this line as the very first line (no quotes!):
"C:Setxa addmem >NIL:"
Change C: to the appropriate path where you place the SETXA icon/program.
Garbled images, huh? Fire up SnoopDOS and make it save the log to a file in the HD. Check it/stop (Snooping) when the fux0rded thing happens. After, move the "misbehaving" application/program to the exclude list of fblit! :rtfm: