@ CharleyO
It isn't that ewido works best with, it doesn't work with win9x or winME, a-squared is compatible with win9x through winXP, etc. so provided you have XP you could use either ewido or a-squared.
While I was trying to do a full system scan, Ewido would just shut off, even the resident scanner. Anything I can do about that ?
What program were you doing a full scan with ?
Running a scan with another resident scanner running can cause issues although avast and ewido are relatively well behaved. I always pause avast's standard shield when doing a scan with another security program, the same would be true if I did it the other way, avast on-demand scan, pause ewido resident scanner. If for no other reason it will avoid any possible conflict and reduce any duplication of scan as every tine one scanner opens a file the other is likely to want to scan it also.
I would suggest a reboot then try running the same things (and record what you did) to see if you can replicate the fault, if so the record you made could help as there is insufficient information for anything other than a guess as I did above.
