pretty much.
if i cant come up with any good ideas for tunes, then i just make some odd bits, like atmos and pads, lead sounds, acid lines, and of course beats. anything really, just hum a bass or a screech a sound, and try to make something that sounds like it. usually the end result sound nothing like what i hummed earlier, but its till something new.
i mean, you dont always have to be inspired to do some work, its not like a writers job. theres always little bit that you can do by purely following some parameters. eg get a bass sound on a synth, throw 32 envelopes on it, and keep tweaking until it sound naish. or add a huge effects chain to any odd sound, and observe how it reacts to any adjustments.
generally, i have used the "im not inspired today" excuse many times to myself. but its bollocks man, you really need to push through and just do work. its still fun, you just need to switch the computer on, and get going. once in there, and find something that sound good to you, the fun will start and teh ideas will flow.