Default Does XZ kill SD Cards???

i got the impression that my XZ kills sd cards. does anybody else have that?
it first killed my 32gig sandisk ultra 2 months ago. i thought it was a coincidence and just put in my old 8 gig card(samsung) i had from my old desire hd. and then about a week ago, when i flashed beanstalk i encountered problems for the first time. rom is really laggy, recovery doesn't load, cant open developer options in config menu and so on.
when i click the "storage" button in confg menu, phone freezes. when i pull out the sd card it unfreezes and stops lagging...
without sd everything seems to be back to normal. whats with that????