BT4 will need some tweaking to to

[kalgecin]

I have created an md5/sha1 cracking script(s) in perl htp://code.google.com/p/kalgecin and tried it on backtrack 4 pre with a result of arround 600,000 hashes/second. Switching to zenwalk 6.0 and running the same script gives me around 1,200,000 hashes/second. TWICE as fast . I thing the BT4pre kernel needs optimizing or runlevel be optimized. I think that there's a lot of modules loaded during bootup which mostly we don't use. A script could be created to load/unload those unused "things" and put BT4 into a "minimal state" for speed such as rainbowtable generation

[floyd]

Then write such a script and post it...

[isdigit]

Its your script, not the kernel. The other application IS going faster then yours. How can you justify the kernel itself is slow.