>> I just have a regular user account that happens to be named "guest".
The name if the account is irrelevant, the importance is on the password. If the account doesn't have a password than anyone can login (duh). If you wanted to secure your system you would put a password on this account or remove it. I find it difficult to sympathize with you while YOU added a open 'guest' account and expect 100% security.
>>I never touched any of my permissions
That doesn't mean they are apple's factory settings. Applications can (& have) changed permissions and there have been numberous reports of Installers which seem to mess up permissions.
Like I said, i'm not having the problem you've described. However you should report it to Apple is you still think its a big. In the mean time remove your 'guest' account or set a password for it even if its just 'guest'. So user/password would be 'guest'/'guest'. You may find that fixes your problems.
The name if the account is irrelevant, the importance is on the password. If the account doesn't have a password than anyone can login (duh). If you wanted to secure your system you would put a password on this account or remove it. I find it difficult to sympathize with you while YOU added a open 'guest' account and expect 100% security.
>>I never touched any of my permissions
That doesn't mean they are apple's factory settings. Applications can (& have) changed permissions and there have been numberous reports of Installers which seem to mess up permissions.
Like I said, i'm not having the problem you've described. However you should report it to Apple is you still think its a big. In the mean time remove your 'guest' account or set a password for it even if its just 'guest'. So user/password would be 'guest'/'guest'. You may find that fixes your problems.