PHPStorms keeps forgetting certificate credentials

I'm using bunch of certs and name/password autnehtication.Despite certificate password is correct, PHPStorm keeps prompting me for it's password all the time (9 in 10 cases when I try to use SVN). This is really frustrating, because I have to point cert file, type password - all this several times over and over, before I'm able to use SVN integration.

I changed global Subversion/servers settings to store all passwords as plain text, but still no luck.

Is there any "treshold" for telling PHPStorm to not prompt for cert/password again?

One error I'm getting is: svn: E200015: authentication cancelled