The problem with Intel Tiger is that Clang doesn't work there, and the Apple cctools assembler for x86 is too old to parse much of the Intel assembly in the codebase. This means that I have to disable the optimized Intel assembly, which makes parts of the browser (mainly media playback) much much slower. I initially did this for the 10.5 Intel build before I released it, but I was eventually able to get Clang working for the optimized code. Genuinely nobody should be running Intel 10.4, the resources to make that build happen are not justified.