I recently got my first SSD, an Intel 535 120 GB. I tested it initially with AS SSD Benchmark and was getting sequential read of 250 MB/s, and write of 190. This in itself was a problem for me, because the advertised speeds were 500 MB/s for both read and write, which should completely saturate the bandwidth of the SATA II that I'm using. Anyways, I ran the benchmark again this morning and now I'm only getting 56 MB/s for write. Copying large files to the hard drive is unbearably slow. Actually, it's slower than the old 7200 RPM hard drive that it replaced.
Specs
Gigabyte 78LMT-USB3
AMD FX-6300
8 GB DDR3
Intel 535 120 GB
WIndows 7 x64