Problems with DIG

[Katherine Nesbitt]

Hi everyone!
	I have had some serious problems witht the DIG system.  After re-using a
southern blot three to four times, my signal decreases dramatically and
many of my blots become essentially black.  The background also increases. 
Has anyone else had simialr problems or Not?  I really want to hear from
you if its worked or it hasn't ie am 	 alone in this?

Thanks Katherine