design a different parallel version of firefox
There r a lot of net users having 256 MB or less ram. it'll b very helpful If u can devote some time to develop firefox which uses very less physical memory (RAM),more fast nd efficient (u can say a lite version) in parallel with the default firefox development. as a result, end user will have a choice to use the version appropriate to his need. user with more RAM can use default browser nd user with less RAM can use lighter version. THNX.......)
Opaite Mbohovái (1)
This will not be the best place to ask such a question, this site is for asking support questions, not requesting development changes.
I am not sure how many users will have problems due to 256MB or less RAM, but surely even many older machines have at least 256MB RAM. Firefox may already manage on less than 256MB RAM see http://www.mozilla.com/en-US/firefox/3.6/system-requirements/
There are also possibilities of using portable versions, if Hard Drive space is the problem, and versions designed for mobiles. If you mention what system you are trying to use firefox on maybe someone will give a suggestion as to what is available.