MacBook getting a bit slow
I have a 2008 white MacBook. In the beginning it was extremely quick (startup/shutdown/loading of apps) however as time has gone on it has become a bit slower in doing all these tasks.
I have upgraded the RAM to 4GB (from Crucial) and tbh I didn't find this to have done much even though the reviews/opinions of others suggested it would.
I now am thinking of upgrading the OS to snow leopard however am worried that this too may disappoint, plus im thinking it may be worth simply waiting for lion to come out in the summer.
Compared to the what the MacBook came with in the beginning it hasn't got that much installed on it (iWork, TomTom, Skype) so im a bit puzzled as to what could make it slower.
Anyone got any suggestion as to what I could do before I make any purchases?
MacBook, Mac OS X (10.5.8)