Well I suppose if you just use it for documents, email and browsing the net you'll be ok.
Mine became pretty much unusable after about 9 months and I have quite a high-end graphics desktop. Opening programs took ages, openin simple photos in Photoshop took over a minute (usually this takes seconds) and it would randomly freeze up for 10-20seconds. Great fun, especially when you have loads of work to get done.
Either way, that Viao is a nice little machine. I just repaired my HP (regretting it) and have been waiting since Monday for delivery, really annoying.