Started past week or so for reasons I do not understand.
Not changes or disallow of sites etc but images on many sites struggle or do not load for me at the moment, any ideas?

Clear your cache? Which Browser?

Sometimes Firefox crashes/freezes/leaks memory (only in the Win32 build...baka) and I experience cache corruption, which does all sorts of weird things (tekforums logo made of smilies; for example)...

firefox yeah, interesting, will do

If you have a web connection that is permanently on then try disconnecting/reconnecting or resetting it.

I dont know why but mine has issues too occasionally and that cures it.