Common mispronounced IT brands and technical terms:
Adobe : say A-Doe-Bee
Linux : say Lee-Nux (as pronounced by Linus Torvald) NOT Lie-Nux (as many american and european do)
AJAX : say A-Jack (not Ajax as the soccer team where we pronounce it with the silence 'J' as in spanish)
Class : say Cl-Ass/Cl-Last (not Ke-Last as you pronounce it in Malay!)
Wi-Fi : say Why-Fhai
SCSI: say Scuzzy/Ska-Zie
WSDL : say Weasedel
Apache : say Aaa-pa-chey
MySQL : say My-Sequel/My-See-Kwel OR simply My-S-Q-L
Algorithm : say Al-Gore-Ree-Tuhm
...well that's all that popped in my head for now. Feel free to add... (or ask, but I seldomly visit this forum lately, maybe someone else will help you) =)
P/s: This is a tribute to this thread and for those who want to improve their English for interview (especially for an IT related position) =)