They've been somewhat funny here (stateside) too. Partly my fault I suppose, as I have a penchant for working all hours, including during their scheduled maintenance time in the extremely early morning.
Saw some really quirky behavior last week, like the whole right side of the view going to "-". Filtering still seemed to work, just some weird disconnect with the database fields actually being delivered to the web page.
Or another where clicking on filter items causes new nonsense categories to appear (apparently duplicating an adjacent column, but it's nonfunctional, filtering by its elements gives an empty result). They go away on page refresh.
Nothing that they haven't fixed by normal hours, or within a few days, or so it seems. Does suggest a lot of sysadmins running around like headless chickens, trying to put out all the fires though... or maybe not enough of them, just as foreboding I suppose.
Haven't noticed any funny business with Mouser, but they're still kinda, a bit jankier to shop at, so eh.
Tim