Hmmm... sorry to hear people are noticing more incidences of Dagger disconnects. I'll keep an eye out as well for more Dagger disconnects but at this point, I think my interest in finding out the exact cause is somewhat proportional to Bioware's interest in fixing it at this stage. 
Since it happens with the same people ,it can only be due to local setup. Since dagger Was an original map, it would've thoroughly tested and played, also the ps3 updates happens regularly ( if someone does not explicitly disable that). Mb these individuals explicitly disabled stuff, or something as simple as all their ports not opened up.
It's not a ports fwd'ing issue and I just have the standard MP DLC bundle with updates from PSN. Offhand I'm leaning towards some sort of regional/geographic issue as well. My friend and I are both in western USA and have issues, my other friend who did not is based in Korea. Grunt, Loufi and Crimson are in Europe from what I can gather and also have no issues hosting. (shrug)
So you're saying this isn't the Donk? Welp, this isn't awkward at all.
Edit: bah I'll send the invite anyway.
Hahaha… despite the warm fuzzy sentiment behind “Bah, I’ll send an invite anyway…grumble, grumble…” I understand this was a case of mistaken identity, so no need to send a FR. But you are a wise and considerate young woman for offering to send one anyway, perhaps to spare any hurt feelings. But I have no feelings to hurt anymore. My recent experiences with the Bioware RNG store and Wave10 devices with mudda-effin primes/phantoms have reduced my heart to nothing more than a charred blackened lump of coal.
See y'all out there in pugland.