I'm aware of everything you posted but this is not your average hashrate (forging power) abuse case. For some reason my transactions stopped confirming after block 162,882 that should actualy contain 2 more transactions which were broadcasted to network much earlier then block was generated. And then at block 162,888 someone else successfuly registered "voxx" which means an intentional ignorance of my transactions, problems with transaction propagation to some nodes or some bug.
If you have one unconfirmed transaction (for whatever reason) all of your following transactions will be unconfirmed too. You can clear all of your unconfirmed transaction by browsing to
http://127.0.0.1:9090/index/deleteunconfirmed.html .
After that you can try it again.
Previously I have done "GET wallet/synchronize" which removed all except my last name registration "belts" and now
http://127.0.0.1:9090/index/deleteunconfirmed.html removed that name registration as well
but there are still my 50 name registrations and my 1 payment still unconfirmed at
http://qora.co.in/?unconfirmed for total of 51 unconfirmed transactions. Based on what you said it seems those transactions will never be confirmed because they are all linked to QPFsbXuM1d66s2AWGBrXSzFyS88QV6YGUH which went crazy at some point.
Out of curiousity and to check it is not all because only my wallet is broken I have withdrew 1,000 QORA from Poloniex and there at first I got ERROR message but then after webpage reload transaction was shown as supposedly sent, with tx ID 3jomyh1AE48FN29moMsyUKLyyNscv452WRUt7jobZoQX7yxVmuF1U4yr1VT5f6QmVqAGtk2aqZBHDZr
Awmm7jgX which is not shown at explorer or my wallet. But there is however someone's 1 payment confirmed at block 162,995 so right now I have no other explanation besides that at some point the network splitted in two (hard-fork).
I forgot to mention that while I was registering names I was getting an error message every few hours that my copy of blockchain is not synchronized and wallet was auto-starting a full (re)sync.
Please try to deposit or withdraw some small amount of coins from Poloniex and let me know how it ended for you.