Re: F language (Iverson) install on F15 Problem.
Do you mean the J programming language? That's all I see at jsoftware.com. Anyway, jconsole is not hanging, it's just waiting for you to start entering commands:
OS: Fedora 18 x86_64 | CPU: AMD64 3700+ 2.2GHz | RAM: 2GB PC3200 DDR | Disk: 160GB PATA | Video: ATI Radeon 7500 AGP 64MB | Sound: Turtle Beach Santa Cruz CS4630 | Ethernet: Realtek 8110SC