You can try reducing your download bandwith,upload bandwith, Disable UltraPeer capabilities, and disable OOB searching.

It looks like you may have a resource problem. 256 Mb of ram is stretching the limits of what you are asking it to perform.

I also didn't see what type of cpu you had.

It looks as though you are try to get all these programs to run at the same, and they are all fight for the available resources.