Sometimes I enter my passphrase and it opens a completely different wallet. I dont know why this is. I check for extra spaces before and after and thats not it. After a few try's I am able to open my actual wallet. weird..
That does sound strange.
This reminds me, if you've never sent a transaction from your HEAT account, then the entropy of your account is 64 bits. This could be brute forced in a year or two by a modern supercomputer.
If you send a transaction from your account, then a 256 bit public key will be attached to your account number, making it impossible to brute force.