Yes, I uninstalled this time
I did not find google too helpful, other than other people are also having the problem. Steam forums has a page about what to do: https://support.steampowered.com/kb_article...=5204-UOSN-9830
However, I haven't made any changes to my anti-virus software, changed any graphics settings, nor installed any other programs. Last night I tried changing the resolution to 600X480 but that also failed. Not sure how much good would come from deleting my css game cache since the problem is also affecting crysis.
thanks