What route are you taking up?, i was out in Africa on walkabout for 6 months in 94 and i did the umbwe route then crossing over to the western breach scramble and the ash pit wi friends from Zim that had done it a few times, the breach route scared the shit out of me but i managed it with caution on every step, it took us 5 days for the ascent, a few days before we attempted the climb we did mount meru (sp?) nearby to help us acclimatise and to be honest i preferred this climb as there was far fewer tourists on it and it i wasn’t scared 😀 ., i would not recommend the breach route unless you are very fit and/or or very experienced, back then i was only 22 and prob as fit as i’ve ever been in my life due to stupid amounts of cycling/motocross etc and i guess i was also pretty foolish as well.
Amazing feeling when you reach the summit, ti’z a shame we only stayed on the top for 20 minuets before heading back down one of the easier routes.