Most every episode involving space-time continuums and spatial fluxes and the like really, really bore me. Instead of real action, they rely on this gimmick--and "Deadlock" is very gimmicky. I am actually surprised how highly this one is rated...I didn't think very much of it.
When the show begins, Voyager encounters the nasty Vidiians (though you barely see them until late in the show) and all kinds of terrible stuff happens--such as losing Harry Kim and the first baby born on Voyager dies. However, soon the ship is able to make contact with an identical Voyager! And, the two Captain Janeways are actually able to meet and converse! What's to become of all this? See the show and find out how (uggh!) it all works out just fine by the end of the program.
I guess my biggest problem with this one is a serious problem with too many episodes of the series--horrible things happen and then unhappen! I would have preferred crew dying...period. But seeing miraculous endings where everything just works out fine is a bit silly-- especially when it happens repeatedly. In addition, using 'spatial flux' as an automatic answer also seems awfully familiar. I wasn't impressed.