day off every tuesday

[kribo]

i have an as2000 advance ed.(built 1086). it's a win2k w/ lotus domino 4.6 on it. for the last couple of weeks, i've noticed that the backup takes a day off every tuesday. here's my backup schedule, [m,t,w,th and su] i skipped friday night in favor of sunday instead. what i don't understand is, why does the backup skip tuesday night and while all the other days are backed up?

i'm not sure if any changes were made that might have triggered this inconsistency. if anyone has encountered this problem or have an answer please let me know.



thanks,
yan