You can tell if it is a problem with your server or with your client by logging into one of the other public servers out there such as PEQ. If you have the same problem on PEQ, then your client is messed up one way or another (probably wrong version or patched partially or something). If other servers work fine, then your server probably has some other issue with it. If you are seeing invisible men, then that may mean their gender is probably set incorrectly.
Also, what client are you using, Titanium or SoF? You might also want to make sure that you copied all of the .conf files from your /utils folder into your server folder so you have all of the correct and updated Opcodes in the right place.
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