If you're seeing this, it's because Glider is a little worried about a change to scan.dll, part of the game. Normally, this is used for looking for keyloggers, trojans, and other malware - but it also scans for known apps like Glider. It doesn't normally see Glider unless you run with Shadow disabled or you start a new copy of the game with an old copy of Glider laying around. Still, I'm very paranoid from the recent actions lately, so I'm leaving the NetCheck stop up overnight so I can check it tomorrow morning with a clear head.
If you want to glide before I flip the switch, you can simply disable NetCheck by editing it in Launchpad (config... Detection). That'll turn off the NetCheck and let Glider run. Be warned that there's a bit more risk with that, particularly if you don't have the beta, since something like a Warden update would not reach you. If you must run tonight with NetCheck off, I suggest you grab one of the 1.4.5 betas to protect yourself from Warden updates.
Official discussion of this stuff is here, please don't make new threads on the same topic:
http://vforums.mmoglider.com/showthread.php?p=487246