Google probably makes MINOR adjustments to its algo fairly often. But MAJOR adjustments shouldn't be necessary at this stage, after at least seven years of research and testing. So any sudden big changes in your sites' SERPs are probably not due to changes in the algo, but rather to something specific to your site.
I check my rankings on Google everyday. Nothing really big has happened, except one of my sites is now jumped from rank 2 to rank 1.
Mine has only been getting better over the past couple months. There have been some minor hiccups, but it's mostly been good.
well ive cleaned up my site not that it was really doing anything wrong a couple of sitewides and a few duplicate kws, just resubmitted to google, alls good
Same with me.. I can check in the morning before work and I could be on the first page (rank number between 5 and 10) for one of my keywords, I check after work and I could be anywhere from page two to page 3, and usually back to page 1 by bed time! Right at the moment I am not in the first 10 pages for the same keyword, or even the keyword plus my name I have been dropped off the first 10 pages before, the same day the PR updated, and wasn't back on the first page until Nov 1st, So it took like 5 days to crawl back. I hope it doesn't take that long this time! (its worth about 150 hits a day from G) Whats strange is that Google webmaster tools says that I have moved from number 8 to 7 for that keyword.. Still rock solid at number 4 on yahoo. Ilive-cms_com I just noticed that you are in Brizzy too... Maybe Google just do this to tease us because there jealous of our weather (Yeah.. Who needs water, Its overrated! "Long live the drought" )
I am seeing a big change in SERPs for one of my site. Other sites are stable, little here and there. The new update has bring all the keywords in the top 20 where it was nowhere in top 100. I hope this is specific to some sites and not for all the sites. Just my 2 cents.