In reply to Lh88:
I lived on the shores of Lake Malawi in the 1990s and visited Mulanje a couple of times with non-climbing friends. I soloed several of the easy/scrambling routes to most of the Mulanje peaks while they trekked the Plateau, but I didn't do any of the main technical climbs so can only give an impression from the terrain I passed through.
It is worth getting Frank Eastwood's Guide Book to the Mulanje Massif - I think there is a new edition (mine dates from the late 1970s i think). It has the main climbing routes recorded in it, with details of gear needed. There are some bolts on some of the harder routes though these may be 30 to 40 years old by now.
The rock has very few cracks and routes tend to follow ridges, water-worn runnels or major geological fault lines (bouldery chimneys and gullies). There are long stretches of slabby rough granite where friction is good when it is dry - a bit precarious when it rains. Holds and protection are mostly in the form of grass tussocks and Velozia bushes. (imagine something like a yucca plant stem...). These are pretty solidly attached if there hasn't been a fire recently (that really weakens their hold...). You may have a few opportunities to place big cams, but probably not many so taking a big rack of them is not necessary. Yosemite it ain't.
As I was solo and therefore moving most of the time, I mostly wore shorts and t-shirt and a pair of fell-running shoes and carried waterproofs and a light fleece. It gets cold at night (just above freezing) and it can rain up on the plateau, even in the dry season. Dense drizzly fog can also happen in the dry season (Mulanje is miserable in such "chiperoni" weather). On a sunny day it is a magical place to be and I liked the rock too - a bit like 6,000 ft high versions of the Dartmoor Tors.
If you do climb something there, post here - would be great to get some recent reports.
There is a wobbly video here, of an apparently first ascent of a route on Chambe East Face
http://www.supertopo.com/tr/Mt-Mulanje-East-Face-Chombe-A-Climbing-FA-and-o...
And report of an ascent of the 'classic' Chambe West Face route:
http://www.alardsbigwallclimbing.com/Mulanje.htm
Eddie