I would suggest to try the App that is currently in our Public Beta Test. Seems that some people having problems with the 4.45 client and our "official" App, which was built with a rather old version of the BOINC library.
The failing address is deep down in the system libs, might be somewhat got broken down there on your installation. A hardware problem I would consider to be rather unlikely (though not impossible), as the error happens always in the same region of the process' memory space.
BM

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Oh - not only Einstein@Home, but LHC@Home, too? Sounds like a client problem to me. Do you want to give it another try with the 4.19?
BM
BM