More odd is when I finally get logged back in, I'm flying, and I have to click "stop flying" to land. Even on sims with flight disabled.
Second Life 1.23.4 (12390

Release Notes
Built with MSVC version 1400
CPU: AMD (Unknown model) (2999 MHz)
Memory: 3327 MB
OS Version: Microsoft Windows Vista Service Pack 1 (Build 6001)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: GeForce 9800 GT/PCI/SSE2/3DNOW!
Windows Graphics Driver Version: 8.15.0011.9038
OpenGL Version: 3.1.0
libcurl Version: libcurl/7.18.1 OpenSSL/0.9.8j zlib/1.2.3
J2C Decoder Version: KDU
Audio Driver Version: FMOD version 3.740000
LLMozLib Version: [LLMediaImplLLMozLib] - 2.01.26598 (Mozilla GRE version 1.8.1.21_0000000000)