RedGerry

I use Avira anti-virus and have 4 systems in 'almost' identical configs. Same software, both games and applications, etc. All Vista 64 Business

This problem has arose on only one machine. Whats most annoying about it is things like browsers seem to treat the taskbar as actually hidden and therefore (taskbars are on right of screen) there is a column obscured which usually includes the primary menu header (i.e. file).

Definitely irritating and as yet have found no definite cause or solution.