Troubleshooting Strange Problem

Hi, I moved my server, changed the IP addresses, etc., and now I'm having strange problems with PHP. Not on all scripts, just some. Scripts that worked just fine before I moved it. Most notably, I'm working with Phorm < http://holotech.net > and I can no longer pass certain variables. Again: this worked *just fine* before I moved the server. Makes me think it's got nothing to do with the script, so what could have gone wrong with the server? Again, certain scripts, such as FishCart < http://fishcart.org > continue to work fine after the move. Has anybody run into anything like this before? Your help would be appreciated. TIA, BenO