@Dark_Angel85

just like mehularjput said there might be a widget doing that to hildon-home

in my case i figured out that ap news widget makes n900 lags after 1 day of usage

but now after i removed it (no need to uninstall) just removing it from the desktop

i got n900 says in conky 23 days up
and still fine

PS : i some times use optimizer n900 script
it is usefull